savagery vs furiousness

savagery and furiousness both are nouns.

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

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

Other hypernyms of savagery include ferocity, fierceness, fury, vehemence, violence, wildness.

savagery (noun)	furiousness (noun)
a brutal barbarous savage act	the property of being wild or turbulent
the trait of extreme cruelty
the property of being untamed and ferocious