daybed vs divan bed

daybed and divan bed both are nouns.

Word	Noun	Adjective	Verb	Adverb
daybed	Yes	No	No	No
divan bed	Yes	No	No	No

As nouns, daybed and divan bed are synonyms defined as:

daybed and divan bed: an armless couch; a seat by day and a bed by night

daybed (noun)	divan bed (noun)
a long chair; for reclining	an armless couch; a seat by day and a bed by night
an armless couch; a seat by day and a bed by night