@betula "Category" and "Tags" describes how something is organised, but the former allows for hierarchical organisation, and the latter doesn't usually.

"Label" is something that helps you with prioritisation or that organises based on need ("for later", "urgent", "spam", "done").

"Keywords" describes the content in a way that makes it easy to find it in a search based on details in the content.

So, yes is the answer.