Heroica Puebla de Zaragoza vs urban center

Heroica Puebla de Zaragoza and urban center both are nouns.

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

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