Upsala vs urban center

Upsala and urban center both are nouns.

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

Upsala (noun)	urban center (noun)
a city in east central Sweden to the northwest of Stockholm	a large and densely populated urban area; may include several independent administrative districts