metropolis vs Saskatoon

metropolis and Saskatoon both are nouns.

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

metropolis (noun)	Saskatoon (noun)
people living in a large densely populated municipality	a city in central Saskatchewan; the largest city in the province
a large and densely populated urban area; may include several independent administrative districts