basso rilievo vs bas relief

basso rilievo and bas relief both are nouns.

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

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

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

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

basso rilievo (noun)	bas relief (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