nastiness vs spitefulness

nastiness and spitefulness both are nouns.

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

As nouns, nastiness and spitefulness are synonyms defined as:

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

Other synonyms of nastiness include bitchiness, cattiness, spite.

nastiness (noun)	spitefulness (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	feeling a need to see others suffer
a state characterized by foul or disgusting dirt and refuse