urban center vs Heroica Puebla de Zaragoza

urban center and Heroica Puebla de Zaragoza both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Heroica Puebla de Zaragoza	Yes	No	No	No

urban center (noun)	Heroica Puebla de Zaragoza (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in south central Mexico (southeast of Mexico City) on the edge of central Mexican plateau