nasty vs nastiness

nasty is not a noun while nastiness is a noun.

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

nasty (noun)	nastiness (noun)
	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

nasty (adjective)	nastiness (adjective)
offensive or even (of persons) malicious
exasperatingly difficult to handle or circumvent
disgustingly dirty; filled or smeared with offensive matter
characterized by obscenity