metropolis vs Katowice

metropolis and Katowice both are nouns.

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

metropolis (noun)	Katowice (noun)
people living in a large densely populated municipality	an industrial city of southern Poland
a large and densely populated urban area; may include several independent administrative districts