urban center vs Cebu City

urban center and Cebu City both are nouns.

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

urban center (noun)	Cebu City (noun)
a large and densely populated urban area; may include several independent administrative districts	an important seaport on the island of Cebu in the Philippines