Vulgar Language Group

"Vulgar" in the scholarly sense has a slight different meaning than how this word is widely used these days. I think one of the alternate names or variations would be better to base the tag name and title on. offensive language seems better. All the others are sub categories of this.

Renaming the tag into offensivelanguage is a good idea. Personally I don't think that it needs any further sub-categorization (yet). The tag is not much in use anyway.