bedroom vs sleeping accommodation

bedroom and sleeping accommodation both are nouns.

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

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

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

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