Lille vs metropolis

Lille and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lille	Yes	No	No	No
metropolis	Yes	No	No	No

Lille (noun)	metropolis (noun)
an industrial city in northern France near the Belgian border; was the medieval capital of Flanders	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts