whimsicality vs arbitrariness

whimsicality and arbitrariness both are nouns.

Word	Noun	Adjective	Verb	Adverb
whimsicality	Yes	No	No	No
arbitrariness	Yes	No	No	No

As nouns, whimsicality and arbitrariness are synonyms defined as:

whimsicality and arbitrariness: the trait of acting unpredictably and more from whim or caprice than from reason or judgment

Other synonyms of whimsicality include capriciousness, flightiness, whimsey, whimsy.

whimsicality (noun)	arbitrariness (noun)
the trait of behaving like an imp	the trait of acting unpredictably and more from whim or caprice than from reason or judgment
the trait of acting unpredictably and more from whim or caprice than from reason or judgment