Entertaiment is a term that has become strongly associated with leisure, primarily because entertainment stimulates the brain to realease seratonin and dopamine. In addition, entertainment often hits on themes the brain was shaped to react deeply to, i.e backstabbing, murder and other themes in the social world. This is why entertainment has such great potential for cross over between different media, and why familiar forms have demonstrated a seemingly unlimited capacity to resurface in new media.
From Middle English entertain, from Medieval Latin intertenere, from the prefix inter and suffix tenere. Related words are entertain, entertainment, entertainmen. TEN is also the abbreviation of Transformational Entertainment News.