Entertaiment is an enjoyable activity that diverts or amuses. It can take you to another world in a euphoric state where you forget all your worries and wish that the entertainment never ends.
A well known example of entertainment is Scheherazade, a story in the professional storytelling tradition. This tale of a woman who saves her life through the telling of her stories was turned into orchestral works by composers Rimsky-Korsakov, Ravel and Szymanowski; into a film by director Pasolini; and into an innovative video game.
Sometimes the word Entertaiment is abbreviated to entmt. You might see this on a flier or in an industry news publication where space is limited. However, this is not a commonly used abbreviation. It is not a catchword or buzzword, and you will rarely see it written in all caps.