sun parlour vs sun parlor

sun parlour and sun parlor both are nouns.

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

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

sun parlour and sun parlor: a room enclosed largely with glass and affording exposure to the sun

Other synonyms of sun parlour include solarium, sun lounge, sun porch, sunporch, sunroom.

sun parlour (noun)	sun parlor (noun)
a room enclosed largely with glass and affording exposure to the sun	a room enclosed largely with glass and affording exposure to the sun