unciform bone vs os hamatum

unciform bone and os hamatum both are nouns.

Word	Noun	Adjective	Verb	Adverb
unciform bone	Yes	No	No	No
os hamatum	Yes	No	No	No

As nouns, unciform bone and os hamatum are synonyms defined as:

unciform bone and os hamatum: the wrist bone in line with the 4th and 5th fingers

Other synonyms of unciform bone include hamate, hamate bone.

unciform bone (noun)	os hamatum (noun)
the wrist bone in line with the 4th and 5th fingers	the wrist bone in line with the 4th and 5th fingers