anatomy vs buccal

anatomy is a noun but buccal is not a noun.

Word	Noun	Adjective	Verb	Adverb
anatomy	Yes	No	No	No
buccal	No	Yes	No	No

anatomy (noun)	buccal (noun)
a detailed analysis
alternative names for the body of a human being
the branch of morphology that deals with the structure of animals

anatomy (adjective)	buccal (adjective)
	of or involving the mouth or mouth region or the surface on which the mouth is located
	of or relating to or toward the cheek