sculpture vs rilievo

sculpture and rilievo both are nouns.

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

As nouns, rilievo is a hyponym of sculpture; that is, rilievo is a word with a more specific, narrower meaning than sculpture:

sculpture: a three-dimensional work of plastic art
rilievo: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background

sculpture (noun)	rilievo (noun)
creating figures or designs in three dimensions	sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background
a three-dimensional work of plastic art

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