storage room vs room

storage room and room both are nouns.

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

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

storage room (noun)	room (noun)
a room in which things are stored	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

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