strip mall vs sales outlet

strip mall and sales outlet both are nouns.

Word	Noun	Adjective	Verb	Adverb
strip mall	Yes	No	No	No
sales outlet	Yes	No	No	No

As nouns, sales outlet is a hypernym of strip mall; that is, sales outlet is a word with a broader meaning than strip mall:

strip mall: a mercantile establishment consisting of a row of various stores and business and restaurants along a road or busy street; usually opening on a parking lot
sales outlet: a place of business for retailing goods

Other hypernyms of strip mall include mercantile establishment, outlet, retail store.

strip mall (noun)	sales outlet (noun)
a mercantile establishment consisting of a row of various stores and business and restaurants along a road or busy street; usually opening on a parking lot	a place of business for retailing goods