Queen City vs metropolis

Queen City and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Queen City	Yes	No	No	No
metropolis	Yes	No	No	No

Queen City (noun)	metropolis (noun)
the largest city in North Carolina; located in south central North Carolina	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts