Rheims vs urban center

Rheims and urban center both are nouns.

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

Rheims (noun)	urban center (noun)
a city in northeastern France to the east of Paris; scene of the coronation of most French kings; site of the unconditional German surrender in 1945 at the end of World War II	a large and densely populated urban area; may include several independent administrative districts