This is the 11758th most frequent French word.
soft
"Soft" in French is an Anglicism meaning smooth, gentle, or not harsh.
Here, 'doux' is used to describe the texture or physical softness of the fabric.
Ce tissu est très doux au toucher.
This fabric is very soft to the touch.
In this case, 'douce' is used to describe the quality or gentleness of the light.
La lumière dans la pièce était douce et chaleureuse.
The light in the room was soft and warm.
Here, 'douce' refers to the tone or soothing quality of her voice.