urban center vs Nagano

urban center and Nagano both are nouns.

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

urban center (noun)	Nagano (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in central Honshu to the northwest of Tokyo; site of a Buddhist shrine