coronoid process vs os

coronoid process and os both are nouns.

Word	Noun	Adjective	Verb	Adverb
coronoid process	Yes	No	No	No
os	Yes	No	No	No

coronoid process (noun)	os (noun)
a sharp triangular process projecting from a bone	rigid connective tissue that makes up the skeleton of vertebrates
	a mouth or mouthlike opening