A "nerd" or "geek" typically refers to someone who is deeply passionate about specific subjects, often related to technology, science, or pop culture. This can include interests in areas like computers, video games, comic books, or science fiction. While the terms were once considered derogatory, they have become more accepted and even celebrated in recent years. Nerds and geeks often engage in communities that share their interests, attending events like comic conventions or participating in online forums. They may also contribute to creative works, such as fan fiction or cosplay, showcasing their enthusiasm and knowledge in their favorite areas.