Kwangju vs urban center

Kwangju and urban center both are nouns.

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

Kwangju (noun)	urban center (noun)
city in southwestern South Korea; an important military base during the Korean War	a large and densely populated urban area; may include several independent administrative districts