waiting area vs room

waiting area and room both are nouns.

Word	Noun	Adjective	Verb	Adverb
waiting area	Yes	No	No	No
room	Yes	No	Yes	No

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

waiting area: a room (as in a hotel or airport) with seating where people can wait
room: an area within a building enclosed by walls and floor and ceiling

waiting area (noun)	room (noun)
a room (as in a hotel or airport) with seating where people can wait	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

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