metropolis vs Recife

metropolis and Recife both are nouns.

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

metropolis (noun)	Recife (noun)
people living in a large densely populated municipality	a port city of northeastern Brazil on the Atlantic
a large and densely populated urban area; may include several independent administrative districts