Split vs metropolis

Split and metropolis both are nouns.

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

Split (noun)	metropolis (noun)
an old Croatian city on the Adriatic Sea	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts