Antwerpen vs metropolis

Antwerpen and metropolis both are nouns.

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

Antwerpen (noun)	metropolis (noun)
a busy port and financial center in northern Belgium on the Scheldt river; it has long been a center for the diamond industry and the first stock exchange was opened there in 1460	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts