nastiness vs cattiness

nastiness and cattiness both are nouns.

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

As nouns, nastiness and cattiness are synonyms defined as:

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

Other synonyms of nastiness include bitchiness, spite, spitefulness.

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