country store vs retail store

country store and retail store both are nouns.

Word	Noun	Adjective	Verb	Adverb
country store	Yes	No	No	No
retail store	Yes	No	No	No

As nouns, retail store is a hypernym of country store; that is, retail store is a word with a broader meaning than country store:

country store: a retail store serving a sparsely populated region; usually stocked with a wide variety of merchandise
retail store: a place of business for retailing goods

Other hypernyms of country store include mercantile establishment, outlet, sales outlet.

country store (noun)	retail store (noun)
a retail store serving a sparsely populated region; usually stocked with a wide variety of merchandise	a place of business for retailing goods