"geek" applies to someone with intellectual pursuits to the exclusion of more popular interests. Whereas a "nerd" is applied to those who are more socially withdrawn within such activities

A nerd is usually not well-adjusted to society; a nerd's friends are almost exclusively other nerds. Nerds are often smarter than geeks.

A geek doesn't have to be smart. He can just like weird things. Most often nerds are the smart ones. So a "smart geek" is more likely a nerd, while a "stupid nerd" is probably not a nerd, but just a geek.

:D okay,wow! How can anybody know that stuff ? Damn! Where did you read that ? ; DD

I looked up both of them up. :P

: DD

Why is the question closed?

closed ? how ? ;o this was my first question I've made sorry if it's wrong : D how can I open it ? ;D

Oh I got it! You can't answer. I wonder why ? O.o