half-relief vs mezzo-relievo

half-relief and mezzo-relievo both are nouns.

Word	Noun	Adjective	Verb	Adverb
half-relief	Yes	No	No	No
mezzo-relievo	Yes	No	No	No

As nouns, half-relief and mezzo-relievo are synonyms defined as:

half-relief and mezzo-relievo: a sculptural relief between low relief and high relief

Other synonyms of half-relief include mezzo-rilievo.

half-relief (noun)	mezzo-relievo (noun)
a sculptural relief between low relief and high relief	a sculptural relief between low relief and high relief