A fun activity or event that brings pleasure to a group of people. It could be anything from watching a movie or playing a game to a performance of some sort, such as a concert.
One of the most important parts of entertainment is the interaction between the participants. It is also important for them to feel like they are part of a special community or family, with members taking turns to be the entertainer and host. The most entertaining and enjoyable forms of entertainment are the ones that involve the most social interaction, such as sports, musical performances or family games.