# Categories vs. Groups?

**URL:** <https://meta.discourse.org/t/categories-vs-groups/69817>\
**Category:** Support\
**Created:** [2017年九月11日 16:11 UTC](https://meta.discourse.org/t/categories-vs-groups/69817 "2017-09-11T16:11:28Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)\
**Post date:** [2017年九月11日 16:33 UTC](https://meta.discourse.org/t/categories-vs-groups/69817/2 "2017-09-11T16:33:05Z")

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- Categories are collections of topics.
- Groups are collections of Users.
- You can restrict access to categories to particular groups.
- People can watch particular categories to get notifications for that category.

If people can read a category, posts from that category can be included in the summary email that goes out periodically, depending on what the user has selected (and what the default was when their account was created).

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_[View the full topic](https://meta.discourse.org/t/categories-vs-groups/69817)._