Daugavpils vs urban center

Daugavpils and urban center both are nouns.

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

Daugavpils (noun)	urban center (noun)
a city of southeastern Latvia	a large and densely populated urban area; may include several independent administrative districts