Brunswick vs metropolis

Brunswick and metropolis both are nouns.

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

Brunswick (noun)	metropolis (noun)
a city in central Germany	people living in a large densely populated municipality
a university town in southwestern Maine	a large and densely populated urban area; may include several independent administrative districts
a town in southeast Georgia near the Atlantic coast; a port of entry