Cebu City vs urban center

Cebu City and urban center both are nouns.

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

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