I have had this conversation with several people and we can never come to a conclusion. What is the difference between a geek and a nerd or are they interchangeable? A nerd to me is someone who is smart and socially awkward, like those kids that are good at spelling bees, they are nerds. Geeks are people who are obsessed with movies or comics like star trek and star wars fans. No one take me too seriously, I'm not trying to make fun of anything. I've just had some funny discussions about this topic with my friends.