metropolis vs Baltimore

metropolis and Baltimore both are nouns.

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

metropolis (noun)	Baltimore (noun)
people living in a large densely populated municipality	the largest city in Maryland; a major seaport and industrial center
a large and densely populated urban area; may include several independent administrative districts