Entertaiment is a word that describes any experience that engrosses one into a euphoric state, where they wish that the moment just lasts forever. It may be an activity that is purely recreational, such as a game of basketball, or it could be a more serious experience, like attending a religious festival or reading a work of literature such as Shakespeare. Whatever the scale of the entertainment, it is a very versatile concept that can be transformed in any medium, and has shown a remarkable ability to be reinterpreted.
From the Middle Latin intertenere, from the Indo-European root tenere, meaning to hold inside.