Entertaiment is a word that can be used to describe almost any kind of entertainment. From a private music listening experience for two, to an orchestral work based on the story of Scheherazade in the professional storytelling tradition, to a film adaptation or innovative video game. Stories like this can often inspire a retelling in another medium, which illustrates the power of entertainment to create connection across different types of art and media.
Many forms of entertainment hit on points that the brain was evolved to deeply react to, such as social backstabbing and murders. This is because they are meant to entertain us.