living-room vs salon

living-room and salon both are nouns.

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

As nouns, salon is a hyponym of living-room; that is, salon is a word with a more specific, narrower meaning than living-room:

living-room: a room in a private house or establishment where people can sit and talk and relax
salon: elegant sitting room where guests are received

Other hyponyms of living-room include common room, morning room.

living-room (noun)	salon (noun)
a room in a private house or establishment where people can sit and talk and relax	elegant sitting room where guests are received
	gallery where works of art can be displayed
	a shop where hairdressers and beauticians work