Kitakyushu vs urban center

Kitakyushu and urban center both are nouns.

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

Kitakyushu (noun)	urban center (noun)
a Japanese city on northern Kyushu	a large and densely populated urban area; may include several independent administrative districts