urban center vs Lille

urban center and Lille both are nouns.

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

urban center (noun)	Lille (noun)
a large and densely populated urban area; may include several independent administrative districts	an industrial city in northern France near the Belgian border; was the medieval capital of Flanders