sun parlour vs sunroom

sun parlour and sunroom both are nouns.

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

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

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

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

sun parlour (noun)	sunroom (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