Zurich vs urban center

Zurich and urban center both are nouns.

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

Zurich (noun)	urban center (noun)
the largest city in Switzerland; located in the northern part of the country	a large and densely populated urban area; may include several independent administrative districts