dormitory room vs dormitory

dormitory room and dormitory both are nouns.

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

As nouns, dormitory room and dormitory are synonyms defined as:

dormitory room and dormitory: a large sleeping room containing several beds

Other synonyms of dormitory room include dorm room.

dormitory room (noun)	dormitory (noun)
a large sleeping room containing several beds	a college or university building containing living quarters for students
	a large sleeping room containing several beds