I'm just cautious because I'm not sure about this. In the movies and series the word "nerd" seems to have a negative connotation, that's at least what I concluded. Someone called me once a nerd and I didn't know if it's a compliment or insult!! I wouldn't use these two terms (why not using the word smart or intelligent ... etc), but since they are being used, I'm trying to know which is for which.