Entertaiment is an activity that provides pleasure, diversion, or amusement. This includes a wide range of activities such as sports, games, music, films, plays, and other public performances. In some cases, entertainment is used as a form of education or enlightenment. The story of Scheherazade, a woman from the Persian professional storytelling tradition who tells her tales to save her own life, is an example of entertainment with a deeper purpose.
You may see the word entertainment abbreviated as entmt on fliers or in industry news publications where space is limited. However, this is not commonly used in general writing.