beauty parlor vs beauty parlour

beauty parlor and beauty parlour both are nouns.

Word	Noun	Adjective	Verb	Adverb
beauty parlor	Yes	No	No	No
beauty parlour	Yes	No	No	No

As nouns, beauty parlor and beauty parlour are synonyms defined as:

beauty parlor and beauty parlour: a shop where hairdressers and beauticians work

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

beauty parlor (noun)	beauty parlour (noun)
a shop where hairdressers and beauticians work	a shop where hairdressers and beauticians work