This name for a work of art that you may carve in art class comes from the Latin for "to carve"
.... For instance, to make plaster easier to carve, one can add an aggregate 
of ... Also, a work, such as a painting, sculpture, poster, or video, that is designed 
to... [DOC] [TLE] sculpture - Dictionary Definition : Vocabulary.com [PAR] You can make sculpture from clay, marble, wood, and even mashed potatoes, 
though the potato kind might not make it into an art museum.