morning room vs parlour

morning room and parlour both are nouns.

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

As nouns, parlour is a hypernym of morning room; that is, parlour is a word with a broader meaning than morning room:

morning room: a sitting room used during the daylight hours
parlour: a room in a private house or establishment where people can sit and talk and relax

Other hypernyms of morning room include front room, living-room, living room, parlor, sitting room.

morning room (noun)	parlour (noun)
a sitting room used during the daylight hours	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