breathing space vs room

breathing space and room both are nouns.

Word	Noun	Adjective	Verb	Adverb
breathing space	Yes	No	No	No
room	Yes	No	Yes	No

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

Other hypernyms of breathing space include elbow room, way.

breathing space (noun)	room (noun)
sufficient room for easy breathing or movement	an area within a building enclosed by walls and floor and ceiling
a short respite	the people who are present in a room
	space for movement
	opportunity for

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