Pernambuco vs urban center

Pernambuco and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pernambuco	Yes	No	No	No
urban center	Yes	No	No	No

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