Pernambuco vs metropolis

Pernambuco and metropolis both are nouns.

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

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