Grenoble vs urban center

Grenoble and urban center both are nouns.

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

Grenoble (noun)	urban center (noun)
a city in southeastern France on the Isere River	a large and densely populated urban area; may include several independent administrative districts