Leicester vs metropolis

Leicester and metropolis both are nouns.

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

Leicester (noun)	metropolis (noun)
an industrial city in Leicestershire in central England; built on the site of a Roman settlement	people living in a large densely populated municipality
a largely agricultural county in central England	a large and densely populated urban area; may include several independent administrative districts