furiousness vs fury

furiousness and fury both are nouns.

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

As nouns, furiousness and fury are synonyms defined as:

Other synonyms of furiousness include ferocity, fierceness, vehemence, violence, wildness.

furiousness (noun)	fury (noun)
the property of being wild or turbulent	the property of being wild or turbulent
	a feeling of intense anger
	state of violent mental agitation