evilness vs evil

evilness and evil both are nouns.

Word	Noun	Adjective	Verb	Adverb
evilness	Yes	No	No	No
evil	Yes	Yes	No	No

As nouns, evilness and evil are synonyms defined as:

evilness and evil: the quality of being morally wrong in principle or practice

evilness (noun)	evil (noun)
the quality of being morally wrong in principle or practice	morally objectionable behavior
	the quality of being morally wrong in principle or practice

evilness (adjective)	evil (adjective)
	morally bad or wrong
	having or exerting a malignant influence
	having the nature of vice