Marrakech vs urban center

Marrakech and urban center both are nouns.

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

Marrakech (noun)	urban center (noun)
a city in western Morocco; tourist center	a large and densely populated urban area; may include several independent administrative districts