Entertaiment is a broad term that can be used to describe anything that provides amusement or pleasure. A movie, TV show, sports event, or even a meal can all be classified as entertainment. The word entertainment is often abbreviated to entmt. This is often seen on fliers or in industry news publications, but it is not generally abbreviated in general writing.
Entertainment hits on many themes that the brain was shaped to deeply react to, such as social backstabbing and murders. Entertainers (actors, sport players, influencers, musicians etc) are often misunderstood for what they do and say, but it is important to remember that they are just entertainers.