anatomy vs muscular

anatomy is a noun but muscular is not a noun.

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

anatomy (noun)	muscular (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)	muscular (adjective)
	having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer
	of or relating to or consisting of muscle
	having or suggesting great physical power or force
	(of a person) possessing physical strength and weight; rugged and powerful