parlour vs reception room

parlour and reception room both are nouns.

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

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

parlour: reception room in an inn or club where visitors can be received
reception room: a room for receiving and entertaining visitors (as in a private house or hotel)

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