Entertainment is a highly complex and ambiguous concept. It may mean something different for each individual and its meaning is constantly changing due to the dynamic nature of media and their cross-overs. Generally, entertainment is understood objectively and includes communication between text and audience, it comes from an external stimulus, offers pleasure and requires an active audience.
a pleasant or agreeable occupation for the mind; diversion; amusement: a crossword puzzle is an entertaining form of recreation. The word derives from the Middle French entretenement, from the Latin inter tenere, from tenere, to hold inside. It also contains a trace of the Indo-European root ten, to stretch.