discount store vs outlet

discount store and outlet both are nouns.

Word	Noun	Adjective	Verb	Adverb
discount store	Yes	No	No	No
outlet	Yes	No	No	No

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

Other hypernyms of discount store include mercantile establishment, retail store, sales outlet.

discount store (noun)	outlet (noun)
a sales outlet offering goods at a discounted price	activity that frees or expresses creative energy or emotion
	an opening that permits escape or release
	a place of business for retailing goods
	receptacle providing a place in a wiring system where current can be taken to run electrical devices