Yes, the word softness is a compound word because it is made up of two words: soft+ness.
my hands are softness
its softness felt good
Example sentence - The softness of the blanket was calming.
Hardness
The noun 'softness' is a concrete noun as a word for a physical quality.The noun 'softness' is an abstract noun as a word for the quality of being sympathetic, lenient, or compassionate; the tendency of a market, currency, or commodity to fall in value; a word for a concept.
The softness of the cat's fur is very soothing. The softness here is the soft nature of the fur.
The word 'soft' is not a noun. The word 'soft' is an adjective, a word used to describe a noun.The noun form of the adjective 'soft' is softness, a common noun; a general word for the softness of anything.
"Blanket of softness beneath your feet."
No It's not a compound word
The word, "Ride" is often used to describe the softness or harshness of a moving car. "Hey, Jim - I see that you got your new Hupmobile. How does she ride?"
The contraction (not a compound word) is doesn't.
Upwards is a compound word.