Chaise Longue (Europe) / Chaise Lounge (USA)
Try divan.
divan
A backless sofa is called a chaise lounge. It typically resembles a sofa, but has no back, and only one arm.
ottoman
stool
A sofa is an English word.
The plural word for sofa is sofas.
Backless was created in 1978-11.
A backless slipper is called a mule.
Yes, "sofa" is a noun. It refers to a piece of furniture typically used for seating multiple people.
No, the word "sofa" is a noun, specifically a type of furniture for seating. It is not a preposition, which are words that indicate relationships between other words in a sentence.
There are many definitions and uses for the term 'backless.' One such use refers to a type of dress that doesn't have material on the back, as in a backless evening dress.