beastly vs beastliness

beastly is not a noun while beastliness is a noun.

Word	Noun	Adjective	Verb	Adverb
beastly	No	Yes	No	Yes
beastliness	Yes	No	No	No

beastly (noun)	beastliness (noun)
	unpleasant nastiness; used especially of nasty weather
	the quality of being deliberately mean

beastly (adjective)	beastliness (adjective)
resembling a beast; showing lack of human sensibility
(informal) very unpleasant

beastly (adverb)	beastliness (adverb)
in a beastly manner