Do taxonomies exist only at the site collection level? Or at the sub-site level as well?

Question

I have a question about taxonomies.

Do they exist at only the site collection level? Or can you specify unique taxonomies at the sub-site level as well?

Answer 1

There are only two types of Term Groups:

• Global Term Group. Managed via the central administration UI. Read-only access from all site collections and sites.
• Site Collection Term Group. Managed on the site collection level. Read-only access can be granted to other site collections using "Site Collection Access" (in SharePoint Online Only).

Subsite Term Group does not exist.

Answer 2

They exist in the central term store (MMS SA) and Site Collection (terms themselves are in the MMS SA, but the SA has a pointer to the specific Site Collection).

Subwebs do not have their own taxonomy stores.