bedsit vs bedsitting room

bedsit and bedsitting room both are nouns.

Word	Noun	Adjective	Verb	Adverb
bedsit	Yes	No	No	No
bedsitting room	Yes	No	No	No

As nouns, bedsit and bedsitting room are synonyms defined as:

bedsit and bedsitting room: a furnished sitting room with sleeping accommodations (and some plumbing)

Other synonyms of bedsit include bedsitter.

bedsit (noun)	bedsitting room (noun)
a furnished sitting room with sleeping accommodations (and some plumbing)	a furnished sitting room with sleeping accommodations (and some plumbing)