Casablanca vs urban center

Casablanca and urban center both are nouns.

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

Casablanca (noun)	urban center (noun)
a port on the Atlantic and the largest city of Morocco	a large and densely populated urban area; may include several independent administrative districts