boudoir vs sleeping room

boudoir and sleeping room both are nouns.

Word	Noun	Adjective	Verb	Adverb
boudoir	Yes	No	No	No
sleeping room	Yes	No	No	No

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

Other hypernyms of boudoir include bedchamber, bedroom, chamber, sleeping accommodation.

boudoir (noun)	sleeping room (noun)
a lady's bedroom or private sitting room	a room used primarily for sleeping