urban center vs Gorkiy

urban center and Gorkiy both are nouns.

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

urban center (noun)	Gorkiy (noun)
a large and densely populated urban area; may include several independent administrative districts	an industrial city in the European part of Russia; birthplace of Maksim Gorky