urban center vs Pasadena

urban center and Pasadena both are nouns.

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

urban center (noun)	Pasadena (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southwestern California to the east of Los Angeles