Who is a “nerd”?

A nerd is someone who is highly intelligent and passionate about a particular subject or activity. They tend to be introverted and often have a deep understanding and knowledge of the subject they are interested in. They may be seen as socially awkward and have difficulty connecting with others. Nerds are often seen as having an intense focus on their studies or activities, and may be perceived as being overly analytical or critical. They may also be seen as having a strong sense of morality and a desire to make the world a better place.