Teen Gothic

So I see a lot of things that are not goth being called goth (emo, metal, general non-denominational alternative, etc) and not a lot of goth things being called emo, metal, etc.

As far as I can tell, no one calls Bauhaus a metal or emo band. No one calls them industrial. It seems to me, things get mistaken for goth but not vice versa. In terms of sheer numbers I'm pretty sure there are more metalheads than goths, and I'm pretty sure most people know what metal is (though the subgenres cause many outsiders confusion). Emo is a younger subculture, and so I think has less name recognition, but yeah.

This is a completely idle question with no practical importance, but it's weird, right? So do we have any clue why that is?