The word pornography is difficult to define. In the past it was used broadly to refer to sexually explicit words or images. Today, the meaning of the term has been narrowed somewhat to describe sexually explicit material that is considered offensive. But views about what is “offensive” vary widely. Pornography falls under the larger category of obscenity, another difficult-to-define term that refers to offensive or immoral—but not necessarily sexual—material. (Opposing Viewpoints)