barbarousness vs heinousness

barbarousness and heinousness both are nouns.

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

As nouns, barbarousness and heinousness are synonyms defined as:

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

Other synonyms of barbarousness include atrociousness, atrocity, barbarity.

barbarousness (noun)	heinousness (noun)
the quality of being shockingly cruel and inhumane	the quality of being shockingly cruel and inhumane