metropolis vs Aberdeen

metropolis and Aberdeen both are nouns.

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

metropolis (noun)	Aberdeen (noun)
people living in a large densely populated municipality	a city in northeastern Scotland on the North Sea
a large and densely populated urban area; may include several independent administrative districts	a town in northeastern Maryland
	a town in northeastern South Dakota
	a town in western Washington