sunroom vs sun parlour

sunroom and sun parlour both are nouns.

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

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

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

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

sunroom (noun)	sun parlour (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