os vs coronoid process

os and coronoid process both are nouns.

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

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