Pornographic films (pornos), erotic films, or sex films are films that present sexually explicit subject matter in order to arouse and satisfy the viewer. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity (softcore) and sexual intercourse (hardcore). A distinction is sometimes made between "erotic" and "pornographic" films on the basis that the latter category contains more explicit sexuality, and focuses more on arousal than storytelling, but the distinction is highly subjective.