sleeping room vs sleeping accommodation

sleeping room and sleeping accommodation both are nouns.

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

As nouns, sleeping room and sleeping accommodation are synonyms defined as:

sleeping room and sleeping accommodation: a room used primarily for sleeping

Other synonyms of sleeping room include bedchamber, bedroom, chamber.

sleeping room (noun)	sleeping accommodation (noun)
a room used primarily for sleeping	a room used primarily for sleeping