Words akin to "Nerd" for their duality of non-meaning.
Gay, Hetero, Catholic, Control Freak, Coffee freak, Woman, Man.
Generally, there's only one common thread that blends all of these types together, whether it's a biological one, genetics, beliefs or whatever.
Problem is that it's this thread they're known by, and it's the same thread that makes other behaviour more apparent.
So you're a woman - you like shoes, wear makeup, are concerned about your body etc.
And here's where it gets interesting - because even the women who don't do that sometimes feel they should. Women and the colour pink is as polar as it is with men. It's either "I MUST HAVE" or "I MUST NOT HAVE" - even if your thoughts towards it are "meh".
The Nerd thread is misplaced passion. We're all uptight. English people doubly so because we've also got the English thread. That means we'll tend towards certain things - OCD, telling stories about our best ever...
Sports nerds, however, have got their passion in a place where passion is expected. It's not weird to have a hockey shirt because "HOCKEY RULES!"...and there's the misplaced passion.
To be honest, I freak myself sometimes with returning to childhood everytime a really good bit of Doctor Who comes on, but them's the breaks. The main reason Nerd nerds and Sports nerds don't get on is that we do something while they watch something.
Can you imagine watching a game of D&D? Yawn. That's where the thread unravels and why we'll never truly get on. Even with Blood Bowl.