My gf's mother hates me. When my gf asked her why, one of the reasons was, she said I looked like a nerd.
I always saw Nerd Vs. Geek like such: A nerd is someone who is deeply fond of something. It can be toys, sci-fi show/material, TV shows, or even something like sports. A nerd knows details the average viewer of the same material might not know. Know a fairly complete history of Transformers or can speak Klingon? Nerd. Know the lifetime RBIs of several baseball players or a lot about football? Nerd. A Nerd is knowledgeable on the subject at hand. But a nerd can be socially normal. They know other interests outside of the nerd subject. A Geek is a nerd who is very socially awkward. This is how nerd are usually depicted. Horned rimmed glasses, inhaler, mommy issues... They know almost all about their subject and have little outside frame of reference other than that subject.