sleeping accommodation vs bedchamber

sleeping accommodation and bedchamber both are nouns.

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

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

sleeping accommodation and bedchamber: a room used primarily for sleeping

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

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