Memphis vs metropolis

Memphis and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Memphis	Yes	No	No	No
metropolis	Yes	No	No	No

Memphis (noun)	metropolis (noun)
largest city of Tennessee; located in southwestern Tennessee on bluffs overlooking the Mississippi River	people living in a large densely populated municipality
an ancient city of Egypt on the Nile (south of Cairo)	a large and densely populated urban area; may include several independent administrative districts