financial center vs metropolis

financial center and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
financial center	Yes	No	No	No
metropolis	Yes	No	No	No

financial center (noun)	metropolis (noun)
the part of a city where financial institutions are centered	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts