So permaban is permanent, and banned is just temporary, right?
Correct..also, when a user is banned you can still access their page (while they cannot)..when perma-banned it is as if their account never existed (except you can still see forum posts and game comments by them)
Now...an underage user being banned is odd...they are banned like they are perma-banned...however if they can provide the site proof of their turning 13 then they get their account back. So they are temporarily perma-banned