Gomel vs urban center

Gomel and urban center both are nouns.

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

Gomel (noun)	urban center (noun)
industrial city of Belarus to the southeast of Minsk	a large and densely populated urban area; may include several independent administrative districts