metropolis vs Lille

metropolis and Lille both are nouns.

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

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