parlor vs living-room

parlor and living-room both are nouns.

Word	Noun	Adjective	Verb	Adverb
parlor	Yes	No	No	No
living-room	Yes	No	No	No

As nouns, parlor and living-room are synonyms defined as:

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

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

parlor (noun)	living-room (noun)
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
a room in a private house or establishment where people can sit and talk and relax