vapour bath vs vapor bath

vapour bath and vapor bath both are nouns.

Word	Noun	Adjective	Verb	Adverb
vapour bath	Yes	No	No	No
vapor bath	Yes	No	No	No

As nouns, vapour bath and vapor bath are synonyms defined as:

vapour bath and vapor bath: you sweat in a steam room before getting a rubdown and cold shower

Other synonyms of vapour bath include steam bath, Turkish bath.

As nouns, vapour bath and vapor bath are synonyms defined as:

vapour bath and vapor bath: a room that can be filled with steam in which people bathe; `vapour bath' is a British term

Other synonyms of vapour bath include steam bath, steam room.

vapour bath (noun)	vapor bath (noun)
you sweat in a steam room before getting a rubdown and cold shower	you sweat in a steam room before getting a rubdown and cold shower
a room that can be filled with steam in which people bathe; `vapour bath' is a British term	a room that can be filled with steam in which people bathe; `vapour bath' is a British term