urban center vs Quezon City

urban center and Quezon City both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Quezon City	Yes	No	No	No

urban center (noun)	Quezon City (noun)
a large and densely populated urban area; may include several independent administrative districts	city on Luzon adjoining Manila