os nasale vs os

os nasale and os both are nouns.

Word	Noun	Adjective	Verb	Adverb
os nasale	Yes	No	No	No
os	Yes	No	No	No

As nouns, os is a hypernym of os nasale; that is, os is a word with a broader meaning than os nasale:

Other hypernyms of os nasale include bone.

os nasale (noun)	os (noun)
an elongated rectangular bone that forms the bridge of the nose	rigid connective tissue that makes up the skeleton of vertebrates
	a mouth or mouthlike opening