Pornographic films (pornos), erotic films, adult films, blue films, sexually explicit films, or 18+ films, are films that represent sexually explicit subject matter in order to arouse, fascinate, or satisfy the viewer. Pornographic films represent sexual fantasies and usually include erotically stimulating material such as nudity or fetishes (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; the distinction is highly subjective.