Lyon vs urban center

Lyon and urban center both are nouns.

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

Lyon (noun)	urban center (noun)
a city in east-central France on the Rhone River; a principal producer of silk and rayon	a large and densely populated urban area; may include several independent administrative districts