capriciousness vs capricious

capriciousness is a noun but capricious is not a noun.

Word	Noun	Adjective	Verb	Adverb
capriciousness	Yes	No	No	No
capricious	No	Yes	No	No

capriciousness (noun)	capricious (noun)
the trait of acting unpredictably and more from whim or caprice than from reason or judgment
the quality of being guided by sudden unpredictable impulses

capriciousness (adjective)	capricious (adjective)
	determined by chance or impulse or whim rather than by necessity or reason
	changeable