diff --git a/components/admin/Cohorts.vue b/components/admin/Collections.vue
similarity index 73%
rename from components/admin/Cohorts.vue
rename to components/admin/Collections.vue
index 81b8f7ec..ea577484 100644
--- a/components/admin/Cohorts.vue
+++ b/components/admin/Collections.vue
@@ -1,41 +1,41 @@
 <template lang='pug'>
 v-container
-  v-card-title {{$t('common.blobs')}}
+  v-card-title {{$t('common.collections')}}
     v-spacer
     v-text-field(v-model='search'
     :append-icon='mdiMagnify' outlined rounded
     label='Search'
     single-line hide-details)
-  v-card-subtitle(v-html="$t('admin.blobs_description')")
+  v-card-subtitle(v-html="$t('admin.collections_description')")
 
-  v-btn(color='primary' text @click='newCohort') <v-icon v-text='mdiPlus'></v-icon> {{$t('admin.new_blob')}}
+  v-btn(color='primary' text @click='newCollection') <v-icon v-text='mdiPlus'></v-icon> {{$t('admin.new_collection')}}
 
   v-dialog(v-model='dialog' width='800' destroy-on-close :fullscreen='$vuetify.breakpoint.xsOnly')
     v-card(color='secondary')
-      v-card-title {{$t('admin.edit_blob')}}
+      v-card-title {{$t('admin.edit_collection')}}
       v-card-text
         v-form(v-model='valid' ref='form')
           v-text-field(
-            v-if='!cohort.id'
+            v-if='!collection.id'
             :rules="[$validators.required('common.name')]"
             :label="$t('common.name')"
-            v-model='cohort.name'
+            v-model='collection.name'
             :placeholder='$t("common.name")')
-              template(v-slot:append-outer v-if='!cohort.id')
-                v-btn(text @click='saveCohort' color='primary' :loading='loading'
-                  :disabled='!valid || loading || !!cohort.id') {{$t('common.save')}}
-          h3(v-else class='text-h5' v-text='cohort.name')
+              template(v-slot:append-outer v-if='!collection.id')
+                v-btn(text @click='saveCollection' color='primary' :loading='loading'
+                  :disabled='!valid || loading || !!collection.id') {{$t('common.save')}}
+          h3(v-else class='text-h5' v-text='collection.name')
 
         v-row
           v-col(cols=5)
             v-autocomplete(v-model='filterTags'
               cache-items
               :prepend-icon="mdiTagMultiple"
-              
               chips small-chips multiple deletable-chips hide-no-data hide-selected persistent-hint
-              :disabled="!cohort.id"
+              :disabled="!collection.id"
               placeholder='Tutte'
               @input.native='searchTags'
+              @focus='searchTags'
               :delimiters="[',', ';']"
               :items="tags"
               :label="$t('common.tags')")
@@ -52,7 +52,7 @@ v-container
               clearable
               return-object
               item-text='name'
-              :disabled="!cohort.id"
+              :disabled="!collection.id"
               @input.native="searchPlaces"
               :delimiters="[',', ';']"
               :items="places"
@@ -68,7 +68,7 @@ v-container
                 //-       v-list-item-subtitle(v-text='item.address')
             
           v-col(cols=2)
-            v-btn(color='primary' text @click='addFilter' :disabled='!cohort.id || !filterPlaces.length && !filterTags.length') add <v-icon v-text='mdiPlus'></v-icon>
+            v-btn(color='primary' text @click='addFilter' :disabled='!collection.id || !filterPlaces.length && !filterTags.length') add <v-icon v-text='mdiPlus'></v-icon>
             
 
         v-data-table(
@@ -91,17 +91,17 @@ v-container
 
   v-card-text
     v-data-table(
-    :headers='cohortHeaders'
-    :items='cohorts'
-    :hide-default-footer='cohorts.length<5'
+    :headers='collectionHeaders'
+    :items='collections'
+    :hide-default-footer='collections.length<5'
     :footer-props='{ prevIcon: mdiChevronLeft, nextIcon: mdiChevronRight }'
     :search='search')
       template(v-slot:item.filters='{item}')
-        span {{cohortFilters(item)}}
+        span {{collectionFilters(item)}}
       template(v-slot:item.actions='{item}')
-          v-btn(@click='editCohort(item)' color='primary' icon)
+          v-btn(@click='editCollection(item)' color='primary' icon)
             v-icon(v-text='mdiPencil')
-          v-btn(@click='removeCohort(item)' color='error' icon)
+          v-btn(@click='removeCollection(item)' color='error' icon)
             v-icon(v-text='mdiDeleteForever')
 
 </template>
@@ -118,16 +118,16 @@ export default {
       dialog: false,
       valid: false,
       search: '',
-      cohort: { name: '', id: null },
+      collection: { name: '', id: null },
       filterTags: [],
       filterPlaces: [],
       tags: [],
       places: [],
-      cohorts: [],
+      collections: [],
       filters: [],
       tagName: '',
       placeName: '',
-      cohortHeaders: [
+      collectionHeaders: [
         { value: 'name', text: 'Name' },
         { value: 'filters', text: 'Filters' },
         { value: 'actions', text: 'Actions', align: 'right' }
@@ -140,7 +140,7 @@ export default {
     }
   },
   async fetch () {
-    this.cohorts = await this.$axios.$get('/cohorts?withFilters=true')
+    this.collections = await this.$axios.$get('/collections?withFilters=true')
   },
 
   methods: {
@@ -150,8 +150,8 @@ export default {
     searchPlaces: debounce(async function (ev) {
       this.places = await this.$axios.$get(`/place?search=${ev.target.value}`)
     }, 100),
-    cohortFilters (cohort) {
-      return cohort.filters.map(f => {
+    collectionFilters (collection) {
+      return collection.filters.map(f => {
         return '(' + f.tags?.join(', ') + f.places?.map(p => p.name).join(', ') + ')'
       }).join(' - ')
     },
@@ -159,28 +159,28 @@ export default {
       this.loading = true
       const tags = this.filterTags
       const places = this.filterPlaces.map(p => ({ id: p.id, name: p.name }))
-      const filter = await this.$axios.$post('/filter', { cohortId: this.cohort.id, tags, places })
+      const filter = await this.$axios.$post('/filter', { collectionId: this.collection.id, tags, places })
       this.$fetch()
       this.filters.push(filter)
       this.filterTags = []
       this.filterPlaces = []
       this.loading = false
     },
-    async editCohort (cohort) {
-      this.cohort = { ...cohort }
-      this.filters = await this.$axios.$get(`/filter/${cohort.id}`)
+    async editCollection (collection) {
+      this.collection = { ...collection }
+      this.filters = await this.$axios.$get(`/filter/${collection.id}`)
       this.dialog = true
     },
-    newCohort () {
-      this.cohort = { name: '', id: null }
+    newCollection () {
+      this.collection = { name: '', id: null }
       this.filters = []
       this.dialog = true
     },
-    async saveCohort () {
+    async saveCollection () {
       if (!this.$refs.form.validate()) return
       this.loading = true
-      this.cohort.name = this.cohort.name.trim()
-      this.cohort = await this.$axios.$post('/cohorts', this.cohort)
+      this.collection.name = this.collection.name.trim()
+      this.collection = await this.$axios.$post('/collections', this.collection)
       this.$fetch()
       this.loading = false
     },
@@ -195,12 +195,12 @@ export default {
         this.loading = false
       }
     },
-    async removeCohort (cohort) {
-      const ret = await this.$root.$confirm('admin.delete_cohort_confirm', { cohort: cohort.name })
+    async removeCollection (collection) {
+      const ret = await this.$root.$confirm('admin.delete_collection_confirm', { collection: collection.name })
       if (!ret) { return }
       try {
-        await this.$axios.$delete(`/cohort/${cohort.id}`)
-        this.cohorts = this.cohorts.filter(c => c.id !== cohort.id)
+        await this.$axios.$delete(`/collection/${collection.id}`)
+        this.collections = this.collections.filter(c => c.id !== collection.id)
       } catch (e) {
         const err = get(e, 'response.data.errors[0].message', e)
         this.$root.$message(this.$t(err), { color: 'error' })
diff --git a/locales/en.json b/locales/en.json
index 6381d8bb..29228af6 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -87,7 +87,7 @@
         "import": "Import",
         "max_events": "N. max events",
         "label": "Label",
-        "blobs": "Blobs",
+        "collections": "Collections",
         "close": "Close"
     },
     "login": {
@@ -235,9 +235,9 @@
         "admin_email": "Admin e-mail",
         "widget": "Widget",
         "wrong_domain_warning": "The baseurl configured in config.json <b>({baseurl})</b> differs from the one you're visiting <b>({url})</b>",
-        "new_blob": "New blob",
-        "blobs_description": "Blobs are groupings of events by tags and places. They will be displayed on the home page",
-        "edit_blob": "Edit Blob"
+        "new_collection": "New collection",
+        "collections_description": "Collections are groupings of events by tags and places. They will be displayed on the home page",
+        "edit_collection": "Edit Collection"
     },
     "auth": {
         "not_confirmed": "Not confirmed yet…",
diff --git a/locales/it.json b/locales/it.json
index 2328c0ae..84b2caf2 100644
--- a/locales/it.json
+++ b/locales/it.json
@@ -87,7 +87,7 @@
         "import": "Importa",
         "max_events": "N. massimo eventi",
         "label": "Etichetta",
-        "blobs": "Bolle"
+        "collections": "Bolle"
     },
     "login": {
         "description": "Entrando puoi pubblicare nuovi eventi.",
@@ -232,10 +232,10 @@
         "smtp_test_success": "Una mail di test è stata inviata all'indirizzo {admin_email}, controlla la tua casella di posta",
         "smtp_test_button": "Invia una mail di prova",
         "admin_email": "E-mail dell'admin",
-        "new_blob": "Crea bolla",
+        "new_collection": "Crea bolla",
         "wrong_domain_warning": "Il \"baseurl\" configurato in config.json <b>({baseurl})</b> è diverso da quello che stai visitando <b>({url})</b>",
-        "blobs_description": "Le bolle sono raggruppamenti di eventi per tag e posti.",
-        "edit_blob": "Modifica bolla"
+        "collections_description": "Le bolle sono raggruppamenti di eventi per tag e posti.",
+        "edit_collection": "Modifica bolla"
     },
     "auth": {
         "not_confirmed": "Non ancora confermato…",
diff --git a/pages/collection/_collection.vue b/pages/collection/_collection.vue
new file mode 100644
index 00000000..eb410bc6
--- /dev/null
+++ b/pages/collection/_collection.vue
@@ -0,0 +1,43 @@
+<template>
+  <v-container class='px-0' fluid>
+
+    <h1 class='d-block text-h3 font-weight-black text-center align-center text-uppercase mt-10 mb-12 mx-auto w-100 text-underline'><u>{{collection}}</u></h1>
+
+    <!-- Events -->
+    <div class='mb-2 mt-1 pl-1 pl-sm-2' id="events">
+      <Event :event='event' v-for='(event, idx) in events' :lazy='idx>2' :key='event.id'></Event>
+    </div>
+  </v-container>
+</template>
+<script>
+
+import { mapState } from 'vuex'
+import Event from '@/components/Event'
+
+export default {
+  name: 'Collection',
+  components: { Event },
+  head () {
+    const title = `${this.settings.title} - ${this.collection}`
+    return {
+      title,
+      link: [
+        { rel: 'alternate', type: 'application/rss+xml', title, href: this.settings.baseurl + `/feed/rss/collection/${this.collection}` },
+        { rel: 'alternate', type: 'text/calendar', title, href: this.settings.baseurl + `/feed/ics/collection/${this.collection}` }
+      ]
+    }
+  },
+  computed: mapState(['settings']),  
+  async asyncData ({ $axios, params, error }) {
+    try {
+      const collection = params.collection
+      const events = await $axios.$get(`/collections/${collection}`)
+      return { events, collection }
+    } catch (e) {
+      console.error(e)
+      error({ statusCode: 400, message: 'Error!' })
+    }
+  }
+
+}
+</script>
\ No newline at end of file
diff --git a/pages/g/_cohort.vue b/pages/g/_cohort.vue
deleted file mode 100644
index fadc7b68..00000000
--- a/pages/g/_cohort.vue
+++ /dev/null
@@ -1,31 +0,0 @@
-<template>
-  <v-container class='px-0' fluid>
-
-    <h1 class='d-block text-h3 font-weight-black text-center align-center text-uppercase mt-10 mb-12 mx-auto w-100 text-underline'><u>{{cohort}}</u></h1>
-
-    <!-- Events -->
-    <div class='mb-2 mt-1 pl-1 pl-sm-2' id="events">
-      <Event :event='event' v-for='(event, idx) in events' :lazy='idx>2' :key='event.id'></Event>
-    </div>
-  </v-container>
-</template>
-<script>
-
-import Event from '@/components/Event'
-
-export default {
-  name: 'Tag',
-  components: { Event },
-  async asyncData ({ $axios, params, error }) {
-    try {
-      const cohort = params.cohort
-      const events = await $axios.$get(`/cohorts/${cohort}`)
-      return { events, cohort }
-    } catch (e) {
-      console.error(e)
-      error({ statusCode: 400, message: 'Error!' })
-    }
-  }
-
-}
-</script>
\ No newline at end of file
diff --git a/server/api/controller/cohort.js b/server/api/controller/collection.js
similarity index 58%
rename from server/api/controller/cohort.js
rename to server/api/controller/collection.js
index 34f8ea60..a186a13c 100644
--- a/server/api/controller/cohort.js
+++ b/server/api/controller/collection.js
@@ -1,38 +1,42 @@
-const Cohort = require('../models/cohort')
+const Collection = require('../models/collection')
 const Filter = require('../models/filter')
 const Event = require('../models/event')
 const Tag = require('../models/tag')
 const Place = require('../models/place')
 const log = require('../../log')
 const dayjs = require('dayjs')
-
+const { col: Col } = require('../../helpers')
 const { Op, Sequelize } = require('sequelize')
 
-const cohortController = {
+const collectionController = {
 
   async getAll (req, res) {
     const withFilters = req.query.withFilters
-    let cohorts
+    let collections
     if (withFilters) {
-      cohorts = await Cohort.findAll({ include: [Filter] })
+      collections = await Collection.findAll({ include: [Filter] })
 
     } else {
-      cohorts = await Cohort.findAll()
+      collections = await Collection.findAll()
     }
 
-    return res.json(cohorts)
+    return res.json(collections)
   },
 
-  // return events from cohort
+  // return events from collection
   async getEvents (req, res) {
+    const format = req.params.format || 'json'
     const name = req.params.name
 
-    const cohort = await Cohort.findOne({ where: { name } })
-    if (!cohort) {
+    const collection = await Collection.findOne({ where: { name } })
+    if (!collection) {
       return res.sendStatus(404)
     }
-    const filters = await Filter.findAll({ where: { cohortId: cohort.id } })
+    const filters = await Filter.findAll({ where: { collectionId: collection.id } })
 
+    if (!filters.length) {
+      return res.json([])
+    }
     const start = dayjs().unix()
     const where = {
       // do not include parent recurrent event
@@ -42,24 +46,16 @@ const cohortController = {
       is_visible: true,
 
       // [Op.or]: {
-      start_datetime: { [Op.gte]: start },
+        start_datetime: { [Op.gte]: start },
         // end_datetime: { [Op.gte]: start }
       // }
     }
 
-    // if (!show_recurrent) {
-    //   where.parentId = null
-    // }
-
-    // if (end) {
-    //   where.start_datetime = { [Op.lte]: end }
-    // }
-
     const replacements = []
     const ors = []
     filters.forEach(f => {
       if (f.tags && f.tags.length) {
-        const tags = Sequelize.fn('EXISTS', Sequelize.literal('SELECT 1 FROM event_tags WHERE "event_tags"."eventId"="event".id AND "tagTag" in (?)'))
+        const tags = Sequelize.fn('EXISTS', Sequelize.literal(`SELECT 1 FROM event_tags WHERE ${Col('event_tags.eventId')}=event.id AND ${Col('tagTag')} in (?)`))
         replacements.push(f.tags)
         if (f.places && f.places.length) {
           ors.push({ [Op.and]: [ { placeId: f.places.map(p => p.id) },tags] })
@@ -71,21 +67,7 @@ const cohortController = {
       }
     })
 
-    // if (tags && places) {
-    //   where[Op.or] = {
-    //     placeId: places ? places.split(',') : [],
-    //     // '$tags.tag$': Sequelize.literal(`EXISTS (SELECT 1 FROM event_tags WHERE tagTag in ( ${Sequelize.QueryInterface.escape(tags)} ) )`)
-    //   }
-    // } else if (tags) {
-    //   where[Op.and] = Sequelize.literal(`EXISTS (SELECT 1 FROM event_tags WHERE event_tags.eventId=event.id AND tagTag in (?))`)
-    //   replacements.push(tags)
-    // } else if (places) {
-    //   where.placeId = places.split(',')
-    // }
-
-    if (ors.length) {
-      where[Op.or] = ors
-    }
+    where[Op.and] = { [Op.or]: ors }
 
     const events = await Event.findAll({
       where,
@@ -96,7 +78,7 @@ const cohortController = {
       include: [
         {
           model: Tag,
-          order: [Sequelize.literal('(SELECT COUNT("tagTag") FROM event_tags WHERE tagTag = tag) DESC')],
+          // order: [Sequelize.literal('(SELECT COUNT("tagTag") FROM event_tags WHERE tagTag = tag) DESC')],
           attributes: ['tag'],
           through: { attributes: [] }
         },
@@ -120,43 +102,43 @@ const cohortController = {
   },
 
   async add (req, res) {
-    const cohortDetail = {
+    const collectionDetail = {
       name: req.body.name,
       isActor: true,
       isTop: true
     }
 
     // TODO: validation
-    log.info('Create cohort: ' + req.body.name)
-    const cohort = await Cohort.create(cohortDetail)
-    res.json(cohort)
+    log.info('Create collection: ' + req.body.name)
+    const collection = await Collection.create(collectionDetail)
+    res.json(collection)
   },
 
   async remove (req, res) {
-    const cohort_id = req.params.id
-    log.info('Remove cohort', cohort_id)
+    const collection_id = req.params.id
+    log.info('Remove collection', collection_id)
     try {
-      const cohort = await Cohort.findByPk(cohort_id)
-      await cohort.destroy()
+      const collection = await Collection.findByPk(collection_id)
+      await collection.destroy()
       res.sendStatus(200)
     } catch (e) {
-      log.error('Remove cohort failed:', e)
+      log.error('Remove collection failed:', e)
       res.sendStatus(404)
     }
   },
 
   async getFilters (req, res) {
-    const cohortId = req.params.cohort_id
-    const filters = await Filter.findAll({ where: { cohortId } })
+    const collectionId = req.params.collection_id
+    const filters = await Filter.findAll({ where: { collectionId } })
     return res.json(filters)
   }, 
 
   async addFilter (req, res) {
-    const cohortId = req.body.cohortId
+    const collectionId = req.body.collectionId
     const tags = req.body.tags
     const places = req.body.places
     try {
-      const filter = await Filter.create({ cohortId, tags, places })
+      const filter = await Filter.create({ collectionId, tags, places })
       return res.json(filter)
     } catch (e) {
       log.error(String(e))
@@ -183,4 +165,4 @@ const cohortController = {
 
 
 
-module.exports = cohortController
\ No newline at end of file
+module.exports = collectionController
\ No newline at end of file
diff --git a/server/api/models/cohort.js b/server/api/models/collection.js
similarity index 72%
rename from server/api/models/cohort.js
rename to server/api/models/collection.js
index 93f7ecb2..16a38b87 100644
--- a/server/api/models/cohort.js
+++ b/server/api/models/collection.js
@@ -1,9 +1,9 @@
 const { Model, DataTypes } = require('sequelize')
 const sequelize = require('./index').sequelize
 
-class Cohort extends Model {}
+class Collection extends Model {}
 
-Cohort.init({
+Collection.init({
   id: {
     type: DataTypes.INTEGER,
     autoIncrement: true,
@@ -21,7 +21,7 @@ Cohort.init({
   isTop: {
     type: DataTypes.BOOLEAN
   }
-}, { sequelize, modelName: 'cohort', timestamps: false })
+}, { sequelize, modelName: 'collection', timestamps: false })
 
 
-module.exports = Cohort
+module.exports = Collection
diff --git a/server/migrations/20220617203517-collection.js b/server/migrations/20220617203517-collection.js
new file mode 100644
index 00000000..5262e049
--- /dev/null
+++ b/server/migrations/20220617203517-collection.js
@@ -0,0 +1,30 @@
+'use strict';
+
+module.exports = {
+  async up (queryInterface, Sequelize) {
+     return Promise.all(
+      [
+        await queryInterface.renameTable('cohorts', 'collections'),
+        await queryInterface.renameColumn('filters', 'cohortId', 'collectionId'),
+        await queryInterface.changeColumn('filters', 'collectionId', {
+          type: Sequelize.INTEGER,
+          allowNull: true,
+          references: {
+            model: 'collections',
+            key: 'id'
+          },
+          onUpdate: 'CASCADE',
+          onDelete: 'SET NULL'
+        }),
+      ])    
+  },
+
+  async down (queryInterface, Sequelize) {
+    /**
+     * Add reverting commands here.
+     *
+     * Example:
+     * await queryInterface.dropTable('users');
+     */
+  }
+};