urban center vs Colorado Springs

urban center and Colorado Springs both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Colorado Springs	Yes	No	No	No

urban center (noun)	Colorado Springs (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in east central Colorado on the eastern edge of the Rocky Mountains; popular tourist center and site of the United States Air Force Academy