Seville vs urban center

Seville and urban center both are nouns.

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

Seville (noun)	urban center (noun)
a city in southwestern Spain; a major port and cultural center; the capital of bullfighting in Spain	a large and densely populated urban area; may include several independent administrative districts