Gwangju vs urban center

Gwangju and urban center both are nouns.

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

Gwangju (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