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