Newport News vs urban center

Newport News and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Newport News	Yes	No	No	No
urban center	Yes	No	No	No

Newport News (noun)	urban center (noun)
a port city in southeastern Virginia at the mouth of the James River off Hampton Roads; large shipyards	a large and densely populated urban area; may include several independent administrative districts