triquetral bone vs carpal

triquetral bone and carpal both are nouns.

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

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

triquetral bone: a wrist bone that articulates with the pisiform and hamate and lunate bones
carpal: any of the eight small bones of the wrist of primates

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

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

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