Why are “movies” and “music” listed under “Entertainment” but “Books and Writing” is listed under “Arts”?
Because many people, unfortunately, do not think of books as entertainment. Kind of goes to show you the sorry state of modern culture. In my own personal opinion, all three of those should be listed under “Entertainment” and “Art”. Because they’re both art, and they’re both entertainment. In the format of a question, which to classify them as would depend mostly on the context of the question.