Augusta vs urban center

Augusta and urban center both are nouns.

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

Augusta (noun)	urban center (noun)
the capital of the state of Maine	a large and densely populated urban area; may include several independent administrative districts
a city in eastern Georgia north-northwest of Savannah; noted for golf tournaments