cattiness vs nastiness

cattiness and nastiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
cattiness	Yes	No	No	No
nastiness	Yes	No	No	No

As nouns, cattiness and nastiness are synonyms defined as:

cattiness and nastiness: malevolence by virtue of being malicious or spiteful or nasty

Other synonyms of cattiness include bitchiness, spite, spitefulness.

cattiness (noun)	nastiness (noun)
malevolence by virtue of being malicious or spiteful or nasty	the quality of being highly unpleasant
	malevolence by virtue of being malicious or spiteful or nasty
	a state characterized by foul or disgusting dirt and refuse