navicular vs carpal

navicular and carpal both are nouns.

Word	Noun	Adjective	Verb	Adverb
navicular	Yes	Yes	No	No
carpal	Yes	Yes	No	No

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

Other hypernyms of navicular include carpal bone, wrist bone.

navicular (noun)	carpal (noun)
the largest wrist bone on the thumb side	any of the eight small bones of the wrist of primates

navicular (adjective)	carpal (adjective)
shaped like a boat	of or relating to the wrist