town vs hometown

town and hometown both are nouns.

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

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

town: an urban area with a fixed boundary that is smaller than a city
hometown: the town (or city) where you grew up or where you have your principal residence

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

town (noun)	hometown (noun)
the people living in a municipality smaller than a city	the town (or city) where you grew up or where you have your principal residence
an urban area with a fixed boundary that is smaller than a city
an administrative division of a county