Kwangchow vs urban center

Kwangchow and urban center both are nouns.

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

Kwangchow (noun)	urban center (noun)
a city on the Zhu Jiang delta in southern China; the capital of Guangdong province and a major deep-water port	a large and densely populated urban area; may include several independent administrative districts