rilievo vs relievo

rilievo and relievo both are nouns.

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

As nouns, rilievo and relievo are synonyms defined as:

rilievo and relievo: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background

Other synonyms of rilievo include embossment, relief, sculptural relief.

rilievo (noun)	relievo (noun)
sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background	sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background