urban center vs Novgorod

urban center and Novgorod both are nouns.

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

urban center (noun)	Novgorod (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in northwestern Russia on the Volkhov River; Russia's oldest city and an important trading center in the Middle Ages