barbarousness vs barbarity

barbarousness and barbarity both are nouns.

Word	Noun	Adjective	Verb	Adverb
barbarousness	Yes	No	No	No
barbarity	Yes	No	No	No

As nouns, barbarousness and barbarity are synonyms defined as:

barbarousness and barbarity: the quality of being shockingly cruel and inhumane

Other synonyms of barbarousness include atrociousness, atrocity, heinousness.

barbarousness (noun)	barbarity (noun)
the quality of being shockingly cruel and inhumane	a brutal barbarous savage act
	the quality of being shockingly cruel and inhumane