metacarpal vs bone

metacarpal and bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
metacarpal	Yes	Yes	No	No
bone	Yes	Yes	Yes	No

As nouns, bone is a hypernym of metacarpal; that is, bone is a word with a broader meaning than metacarpal:

Other hypernyms of metacarpal include os.

metacarpal (noun)	bone (noun)
any bone of the hand between the wrist and fingers	a shade of white the color of bleached bones
	rigid connective tissue that makes up the skeleton of vertebrates
	the porous calcified substance from which bones are made

metacarpal (adjective)	bone (adjective)
of or relating to the metacarpus	consisting of or made up of bone

metacarpal (verb)	bone (verb)
	remove the bones from
	study intensively, as before an exam