Nerd: someone who is socially inept, un-stylish or unnattractive, usually devoted to intellectual or academic pursuits.
Geek: an enthusiast or expert usually in a technological activity, sometimes also a nerd but not necessarily.
I'm definitely a geek, but a nerd no.
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oh and by the moosechild definition of Nintendo Nerd, nah I only own the Wii, and theres not enough good games available for me to play it frequently.