couch that can be converted into a bed; sleeper sofa

A comfortable upholstered chair with a backrest and armrests, typically containing springs and soft padding; a sofa.

person who stays for free in the homes of others while traveling, typically arranged through the internet

sofa cover; slipcover

a large fabric bag filled with small pieces of plastic or foam and used as a chair

upholstered armchair; one-person sofa