Erotica is (in a broad sense) any literary or artistic work that deals substantively with subject matter that is erotically stimulating or sexually arousing but (in a strict sense) is not generally considered to be pornographic. Erotic art may use any artistic form to depict erotic content, including painting, sculpture, drama, film or music. Erotic literature and erotic photography have become genres in their own right.
Curiosa is erotica and pornography as discrete, collectable items, usually in published or printed form. In the antiquarian book trade, pornographic works are often listed under "curiosa", "erotica" or "facetiae".