urban center vs Glasgow

urban center and Glasgow both are nouns.

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

urban center (noun)	Glasgow (noun)
a large and densely populated urban area; may include several independent administrative districts	largest city in Scotland; a port on the Clyde in west central Scotland; one of the great shipbuilding centers of the world