capriciousness vs unpredictability

capriciousness and unpredictability both are nouns.

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

As nouns, capriciousness and unpredictability are synonyms defined as:

capriciousness and unpredictability: the quality of being guided by sudden unpredictable impulses

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