Nerd

A person who is very knowledgeable of technology and enjoys using it. Nerds will talk about the new game coming out in passing while at dinner or grabbing some coffee. Possibly plays video games more than 20 hours a week. The saving grace of the nerd is lovability which means nerds can get married and have normal lives.

Geek

A person who is extremely knowledgeable not just about technology but many things. Geeks usually know too much for their own good and are often mad at the world. Geeks are often so high strung that only another highly strung person can handle them in a social situation. Geeks are likely to play videos games as much as the nerd but refuses to lose to the puny nerds. The geek feels the need to prove themselves superior to the nerds. The nerds don't care and often just make fun of them.

Dweeb

General seen as an awkward person. They seem to not have any grace to themselves and all. Often dweebs trip over their own feet! Dweebs have that inner smarts that never come out unless forced by either a twitch of reality or they feel someone else's answer is that dumb. Dweebs get made fun of by all the time by geeks and nerds alike which adds to their inner nerd fire.