clay sculpture vs sculpture

clay sculpture and sculpture both are nouns.

Word	Noun	Adjective	Verb	Adverb
clay sculpture	Yes	No	No	No
sculpture	Yes	No	Yes	No

As nouns, sculpture is a hypernym of clay sculpture; that is, sculpture is a word with a broader meaning than clay sculpture:

clay sculpture (noun)	sculpture (noun)
sculpture produced by molding	creating figures or designs in three dimensions
	a three-dimensional work of plastic art

clay sculpture (verb)	sculpture (verb)
	shape (a material like stone or wood) by whittling away at it
	create by shaping stone or wood or any other hard material