Pornography (often abbreviated as "porn" or "porno" in informal usage) (Greek: πορνεία, porneia, fornication) is the explicit portrayal of sexual subject matter for the purpose of sexual arousal. Pornography may use a variety of media, including books, magazines, postcards, photos, sculpture, drawing, painting, animation, sound recording, film, video, and video games. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. A pornographic model poses for still photographs. A pornographic actor or porn star performs in pornographic films. If dramatic skills are not involved, a performer in porn films may be also be called a model.