Entertaiment is a word that can be used to describe a wide range of things. It can refer to anything that is fun and enjoyable, such as movies, video games, etc. It can also refer to something that is shocking or disturbing, such as social backstabbing or murders. Entertainment is a form of art that often hits on the themes that our brains were evolved to deeply react to, like death and social backstabbing.
A suffix of Latin origin forming nouns from verb stems (amazement, bewilderment, betterment, merriment) and from Latin -mentum (“the result or effect of some action”). Also a common suffix in English, replacing -y in many words formed from adjectives ending in -ery (such as amaze-ery, merri-ery). The sense ‘entertain’ is late 15c.