San Pedro Sula vs urban center

San Pedro Sula and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
San Pedro Sula	Yes	No	No	No
urban center	Yes	No	No	No

San Pedro Sula (noun)	urban center (noun)
industrial city in northwestern Honduras	a large and densely populated urban area; may include several independent administrative districts