beauty shop vs salon

beauty shop and salon both are nouns.

Word	Noun	Adjective	Verb	Adverb
beauty shop	Yes	No	No	No
salon	Yes	No	No	No

As nouns, beauty shop and salon are synonyms defined as:

Other synonyms of beauty shop include beauty parlor, beauty parlour, beauty salon.

beauty shop (noun)	salon (noun)
a shop where hairdressers and beauticians work	elegant sitting room where guests are received
	gallery where works of art can be displayed
	a shop where hairdressers and beauticians work