sofa bed, convertible - a sofa that can be converted into a bed

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

divan - a long backless sofa (usually with pillows against a wall)

love seat, tete-a-tete, vis-a-vis - small sofa that seats two people

seat - furniture that is designed for sitting on; "there were not enough seats for all the guests"

settee - a small sofa

squab - a soft padded sofa