reception room vs room

reception room and room both are nouns.

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

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

reception room: a room for receiving and entertaining visitors (as in a private house or hotel)
room: an area within a building enclosed by walls and floor and ceiling

reception room (noun)	room (noun)
a room for receiving and entertaining visitors (as in a private house or hotel)	an area within a building enclosed by walls and floor and ceiling
	the people who are present in a room
	space for movement
	opportunity for

reception room (verb)	room (verb)
	live and take one's meals at or in