A "fan" is a device that creates airflow to cool or circulate air in a room. It typically consists of rotating blades powered by an electric motor. Fans can be found in various forms, including ceiling fans, table fans, and box fans, and are commonly used in homes and offices to improve comfort. In a different context, a "fan" refers to an enthusiastic supporter of a person, team, or entertainment, such as a musician or sports team. Fans often show their support by attending events, purchasing merchandise, and engaging in discussions about their favorite subjects.