Arnhem vs urban center

Arnhem and urban center both are nouns.

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

Arnhem (noun)	urban center (noun)
a city in the central Netherlands on the lower Rhine River; site of a battle in 1944 during World War II	a large and densely populated urban area; may include several independent administrative districts