dormitory vs bedchamber

dormitory and bedchamber both are nouns.

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

As nouns, bedchamber is a hypernym of dormitory; that is, bedchamber is a word with a broader meaning than dormitory:

Other hypernyms of dormitory include bedroom, chamber, sleeping accommodation, sleeping room.

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