urban center vs Waterford

urban center and Waterford both are nouns.

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

urban center (noun)	Waterford (noun)
a large and densely populated urban area; may include several independent administrative districts	a port city in southern Ireland; famous for glass industry