urban center vs Esfahan

urban center and Esfahan both are nouns.

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

urban center (noun)	Esfahan (noun)
a large and densely populated urban area; may include several independent administrative districts	city in central Iran; former capital of Persia