metropolis vs Danzig

metropolis and Danzig both are nouns.

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

metropolis (noun)	Danzig (noun)
people living in a large densely populated municipality	a port city of northern Poland near the mouth of the Vistula River on a gulf of the Baltic Sea; a member of the Hanseatic League in the 14th century
a large and densely populated urban area; may include several independent administrative districts