Orizaba vs urban center

Orizaba and urban center both are nouns.

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

Orizaba (noun)	urban center (noun)
a city of east central Mexico (west of Veracruz); a popular resort	a large and densely populated urban area; may include several independent administrative districts