living room vs parlour

living room and parlour both are nouns.

Word	Noun	Adjective	Verb	Adverb
living room	Yes	No	No	No
parlour	Yes	No	No	No

As nouns, living room and parlour are synonyms defined as:

living room and parlour: a room in a private house or establishment where people can sit and talk and relax

Other synonyms of living room include front room, living-room, parlor, sitting room.

living room (noun)	parlour (noun)
a room in a private house or establishment where people can sit and talk and relax	reception room in an inn or club where visitors can be received
	a room in a private house or establishment where people can sit and talk and relax