town vs cow town

town and cow town both are nouns.

Word	Noun	Adjective	Verb	Adverb
town	Yes	No	No	No
cow town	Yes	No	No	No

As nouns, cow town is a hyponym of town; that is, cow town is a word with a more specific, narrower meaning than town:

Other hyponyms of town include burg, boom town, cowtown, ghost town, hometown, Main Street, market town.

town (noun)	cow town (noun)
the people living in a municipality smaller than a city	a small town in a cattle-raising area of western North America
an urban area with a fixed boundary that is smaller than a city
an administrative division of a county