If yes, I think they deserve a Wiki description because I their usage do not seem obvious to me and they seem used for very various purposes.
My impression after a non-exhaustive review:
- secure is totally meaningless on this site and can and should be nuked.
- protection is sometimes meaningful but is not a good tag name. The tag should be removed from the site, but on about half questions that have it, it should be replaced by some other tag such as defense, access-control, integrity, etc.