Erotic art covers any artistic work that evokes erotic arousal or that depicts scenes of lovemaking. It includes paintings, engravings, drawings, sculptures, stories and photographs , music and writing. Defining erotic art is difficult since perceptions of both what is erotic and what is art fluctuate. A sculpture of a phallus in some African cultures considered a traditional symbol of potency though not overtly erotic. In addition, some make a distinction between erotic art and pornography. The distinction may lie in intent and message; erotic art would be items intended as pieces of art, enrapturing formal elements of art, and drawing on other historical artworks. Nevertheless, these elements of distinction are highly subjective. Today, erotic artists thrive, although in some circles, much of the genre is less the more standard genres of art such as portraiture and landscape. During the last few centuries, society has broadened its view of what can be as art and several new styles developed during the 19th century such as Impressionism and Realism. This has given today's artists a broad variety of genres from which to choose, including; fantasy, pinup, horror, fetish, comics, anime, hentai, and many other niche genres all with erotic elements.