urban center vs Taif

urban center and Taif both are nouns.

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

urban center (noun)	Taif (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in western Saudi Arabia to the east of Mecca