beauty shop vs beauty salon

beauty shop and beauty salon both are nouns.

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

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

beauty shop and beauty salon: a shop where hairdressers and beauticians work

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

beauty shop (noun)	beauty salon (noun)
a shop where hairdressers and beauticians work	a shop where hairdressers and beauticians work