town vs Rock Springs

town and Rock Springs both are nouns.

Word	Noun	Adjective	Verb	Adverb
town	Yes	No	No	No
Rock Springs	Yes	No	No	No

town (noun)	Rock Springs (noun)
the people living in a municipality smaller than a city	a town of southwest Wyoming near the Utah border
an urban area with a fixed boundary that is smaller than a city
an administrative division of a county