Softnesses are the quality of being soft, like a pillow or a kitten. It can also mean the gentle or kind way someone speaks or behaves.
Softnesses are usually seen as good things because they make things comfortable and pleasant.
Examples:
The softnesses of the blanket make it nice to cuddle with.
She speaks with such softnesses that it makes me feel calm.
The softnesses of the cat make it nice to pet.
The softnesses of the clouds make them look like big pillows in the sky.
The softnesses of her voice make me feel like I'm being hugged.
The softnesses of the baby's skin are like touching a flower.