urban center vs Genf

urban center and Genf both are nouns.

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

urban center (noun)	Genf (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southwestern Switzerland at the western end of Lake Geneva; it is the headquarters of various international organizations