guardroom vs room

guardroom and room both are nouns.

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

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

guardroom (noun)	room (noun)
a room used by soldiers on guard	an area within a building enclosed by walls and floor and ceiling
a cell in which soldiers who are prisoners are confined	the people who are present in a room
	space for movement
	opportunity for

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