Gwangju vs city

Gwangju and city both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gwangju	Yes	No	No	No
city	Yes	No	No	No

Gwangju (noun)	city (noun)
city in southwestern South Korea; an important military base during the Korean War	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter