hamate bone vs os hamatum

hamate bone and os hamatum both are nouns.

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

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

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

Other synonyms of hamate bone include hamate, unciform bone.

hamate 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