Charleston vs urban center

Charleston and urban center both are nouns.

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

Charleston (noun)	urban center (noun)
an American ballroom dance in syncopated rhythm; popular early in the 20th century	a large and densely populated urban area; may include several independent administrative districts
a port city in southeastern South Carolina
state capital of West Virginia in the central part of the state on the Kanawha river

Charleston (verb)	urban center (verb)
dance the Charleston