bas relief vs basso rilievo

bas relief and basso rilievo both are nouns.

Word	Noun	Adjective	Verb	Adverb
bas relief	Yes	No	No	No
basso rilievo	Yes	No	No	No

As nouns, bas relief and basso rilievo are synonyms defined as:

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

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

bas relief (noun)	basso rilievo (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