basso rilievo vs basso relievo

basso rilievo and basso relievo both are nouns.

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

As nouns, basso rilievo and basso relievo are synonyms defined as:

basso rilievo and basso relievo: a sculptural relief in which forms extend only slightly from the background; no figures are undercut

Other synonyms of basso rilievo include bas relief, low relief.

basso rilievo (noun)	basso relievo (noun)
a sculptural relief in which forms extend only slightly from the background; no figures are undercut	a sculptural relief in which forms extend only slightly from the background; no figures are undercut