Medina vs urban center

Medina and urban center both are nouns.

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

Medina (noun)	urban center (noun)
a city in western Saudi Arabia; site of the tomb of Muhammad; the second most holy city of Islam	a large and densely populated urban area; may include several independent administrative districts