This is the 9258th most frequent French word.
coussin
Cushion.
Here, 'coussin' is used as a noun referring to a cushion, emphasizing its quality of comfort.
Ce coussin est très confortable.
This cushion is very comfortable.
In this sentence, 'coussin' describes an item purchased as a decorative addition to a piece of furniture.
J'ai acheté un coussin pour la décoration du canapé.
I bought a cushion for the decoration of the sofa.
In this example, 'coussin' is mentioned as an object improving comfort during use of another object, the chair.