Collocations for sofa - noun

battered | comfortable, plush | deep, low-slung
She sank into the deep sofa.

chintz, leather, etc. | wide | three-seater, two-seater, etc. | convertible
The convertible sofa means that the apartment can sleep four.

collapse on/onto, flop (back) on/onto, lower yourself onto, settle (yourself) (down) on, sink down on/onto, sink (back/down) onto, sit (down) on, slump (back) on/onto
He slumped back on the sofa in tears.

be sprawled across/on, be stretched out on, lie on, lounge on, recline on, sprawl across/on, stretch out on
I spent the evening sprawled on the sofa, watching TV.

get up from, jump up from, pull yourself up from, rise from
He got up from the sofa to fetch some drinks.

bed

on the ~
She was curled up on the sofa.

the arm/back/edge of a sofa