wrist bone vs carpal bone

wrist bone and carpal bone both are nouns.

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

As nouns, wrist bone and carpal bone are synonyms defined as:

wrist bone and carpal bone: any of the eight small bones of the wrist of primates

Other synonyms of wrist bone include carpal.

wrist bone (noun)	carpal bone (noun)
any of the eight small bones of the wrist of primates	any of the eight small bones of the wrist of primates