carpus vs wrist bone

carpus and wrist bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
carpus	Yes	No	No	No
wrist bone	Yes	No	No	No

carpus (noun)	wrist bone (noun)
a joint between the distal end of the radius and the proximal row of carpal bones	any of the eight small bones of the wrist of primates