Which condition do I need to set to query whether categories or tags have a description?

Hello Community!
I would like to display the descriptions for categories and tags in the archive. However, because new entries in categories and tags may not immediately have content in the descriptions, I would like to hide the output field if they do not have any content yet.
Unfortunately, I currently cannot find any options in the conditions.
Can someone please tell me how I can implement this currently?
Greetings
Matze202