anatomy vs outer

anatomy is a noun but outer is not a noun.

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

anatomy (noun)	outer (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)	outer (adjective)
	being on the outside or further from a center
	being on or toward the outside of the body
	located outside