savagery vs harshness

savagery and harshness both are nouns.

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

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

Other hypernyms of savagery include cruelness, cruelty.

savagery (noun)	harshness (noun)
a brutal barbarous savage act	the quality of being harsh or rough or grating to the senses
the trait of extreme cruelty	excessive sternness
the property of being untamed and ferocious	the roughness of a substance that causes abrasions
	the quality of being cruel and causing tension or annoyance