atrial vs anatomy

atrial is not a noun while anatomy is a noun.

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

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

atrial (adjective)	anatomy (adjective)
of or relating to a cavity or chamber in the body (especially one of the upper chambers of the heart)