# What are collections?

Imagine one of the following cases:

* you own an online shop, and want to add your product assortment to a Twise
* you rent/sell properties, and would want to add your listings to a Twise
* you are a event listing site (tours, concerts, experiences, etc.), and want to add events to a Twise

To support such cases, you can import a special kind of content we call a collection. A Twise will intelligently include your products in the conversation when it is relevant. Using collections, a Twise can transform into a product discovery tool using natural language.

Currently, we support the following collection types:

* `Product`
* `Event`
* `Villa`
* `Page`

A Twise currently is limited to use one collection type at a time.

#### How to add content to a collection?

* Using an API
  * [Adding events](https://help.twise.ai/collections-api-events)
* Importing a Google Merchant XML Feed
* [Importing a Twise XML Feed](https://help.twise.ai/importing-a-collection-via-a-twise-xml-feed)