A fandom is a community of fans who share a common interest in a specific topic, such as a book, movie, TV show, or video game. These fans often engage in discussions, create fan art, and participate in events related to their favorite subject. Fandoms can be found online and offline, with social media platforms and fan conventions serving as popular gathering places. Fandoms can vary in size and intensity, ranging from small groups of dedicated fans to large, global communities. They often create their own culture, including unique language, memes, and traditions. Examples of popular fandoms include those for Harry Potter, Star Wars, and Marvel Comics.