A person or thing that provides entertainment.

From Middle English entertenement, from Old French entretenement.
This programmatically compiled sample from several online sources shows current usage of the word entertaiment. The samples are not intended to represent all possible uses of the word, nor are they endorsed by Merriam-Webster or its editors.
To write an article about entertainment, begin by researching the subject to obtain facts and details. Interviews are a great way to get firsthand information from the subject of the article, but if that is not possible, research biographical information from authorized biographies about the personality you are writing about.

Often, what appears as entertainment to one person may be considered work or an act of cruelty to another. To avoid accusations of libel, keep any negative or demeaning commentary out of your entertainment articles.

Many people enjoy karaoke, so writing an article about some of the best karaoke bars in a certain area can be a great source of entertaiment for your readers. There are always new apps being released, so talk about some of the most popular ones to help your audience find new ways to entertain themselves.