Liverpool vs metropolis

Liverpool and metropolis both are nouns.

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

Liverpool (noun)	metropolis (noun)
a large city in northwestern England; its port is the country's major outlet for industrial exports	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts