harshness vs malevolence

harshness and malevolence both are nouns.

Word	Noun	Adjective	Verb	Adverb
harshness	Yes	No	No	No
malevolence	Yes	No	No	No

As nouns, malevolence is a hypernym of harshness; that is, malevolence is a word with a broader meaning than harshness:

Other hypernyms of harshness include malevolency, malice.

harshness (noun)	malevolence (noun)
the quality of being harsh or rough or grating to the senses	the quality of threatening evil
excessive sternness	wishing evil to others
the roughness of a substance that causes abrasions
the quality of being cruel and causing tension or annoyance