mezzo-relievo vs mezzo-rilievo

mezzo-relievo and mezzo-rilievo both are nouns.

Word	Noun	Adjective	Verb	Adverb
mezzo-relievo	Yes	No	No	No
mezzo-rilievo	Yes	No	No	No

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

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

Other synonyms of mezzo-relievo include half-relief.

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