urban center vs Nan-chang

urban center and Nan-chang both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Nan-chang	Yes	No	No	No

urban center (noun)	Nan-chang (noun)
a large and densely populated urban area; may include several independent administrative districts	a walled city in southeastern China on the Gan Jiang