pisiform bone vs carpal

pisiform bone and carpal both are nouns.

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

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

Other hypernyms of pisiform bone include carpal bone, wrist bone.

pisiform bone (noun)	carpal (noun)
a small wrist bone that articulates only with the triquetral	any of the eight small bones of the wrist of primates

pisiform bone (adjective)	carpal (adjective)
	of or relating to the wrist