I go back and forth between the terms "geek" and "nerd," and they're often used interchangeably, but now some scientist (probably very geeky) has tried to quantify the difference, with a graph!
Are you a geek or a nerd?
I'm not entirely sure I follow his rationale, and only a few of the terms on the graph seem to apply to me. From what I can tell, I'm both extremely geeky and extremely nerdy, mostly due to the books, Star Trek, Star Wars and Tolkien factors. But I don't do gaming, costumes, technology or collecting.
There was no data about stealth geeks.