Durango City vs urban center

Durango City and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Durango City	Yes	No	No	No
urban center	Yes	No	No	No

Durango City (noun)	urban center (noun)
a city in north central Mexico; mining center	a large and densely populated urban area; may include several independent administrative districts