town vs Mason City

town and Mason City both are nouns.

Word	Noun	Adjective	Verb	Adverb
town	Yes	No	No	No
Mason City	Yes	No	No	No

town (noun)	Mason City (noun)
the people living in a municipality smaller than a city	a town in north central Iowa
an urban area with a fixed boundary that is smaller than a city
an administrative division of a county