Qom vs urban center

Qom and urban center both are nouns.

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

Qom (noun)	urban center (noun)
a city in northwestern Iran; a place of pilgrimage for Shiite Muslims	a large and densely populated urban area; may include several independent administrative districts