metropolis vs Karbala

metropolis and Karbala both are nouns.

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

metropolis (noun)	Karbala (noun)
people living in a large densely populated municipality	a city of central Iraq to the south of Baghdad; a holy city for Shiite Muslims because it is the site of the tomb of Mohammed's grandson who was killed there in 680
a large and densely populated urban area; may include several independent administrative districts