urban center vs Gwangju

urban center and Gwangju both are nouns.

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

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