retail store vs mercantile establishment

retail store and mercantile establishment both are nouns.

Word	Noun	Adjective	Verb	Adverb
retail store	Yes	No	No	No
mercantile establishment	Yes	No	No	No

As nouns, retail store and mercantile establishment are synonyms defined as:

retail store and mercantile establishment: a place of business for retailing goods

Other synonyms of retail store include outlet, sales outlet.

retail store (noun)	mercantile establishment (noun)
a place of business for retailing goods	a place of business for retailing goods