bedchamber vs sleeping accommodation

bedchamber and sleeping accommodation both are nouns.

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

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

bedchamber and sleeping accommodation: a room used primarily for sleeping

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

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