The art or practice of entertaining; the activity of supplying amusement.
Entertainment is a huge and complex area of creative expression that has developed in many forms over thousands of years, from the earliest theater to today’s movies, television, music, video games, live performances, and other branded entertainment. The etymology of “entertainment” is uncertain, but the word has come to be associated with pleasure and fun. Entertainment may be intended for a single person or for a group, and it can be adapted to any size or type of occasion or audience.
Entertainment often hits on the things that the brain was evolved to react deeply to, wich gives us good feeling considering that we are social animals.