As far as I know, the Tavern is known as the Tavern. I don't know how off topic sections work in general, but considering people have asked for an off topic section before, I am going to assume that the Tavern is not the same as an off topic section in the first place either.
I think she means for a lot of forums focused on a specific thing they often have an 'off topic' section of the forums. AG really doesn't have a 'topic' so the tavern can't be considered as such, but it is the section where any subject can be discussed.
However we do have topics for other aspects of the forums, my best description of the Tavern would be "miscellanea" in the sense of casual conversation, rather than spam. We did have a sanctioned off topic thread at one point, I think you remember how that turned out.
