flightiness vs whimsicality

flightiness and whimsicality both are nouns.

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

As nouns, flightiness and whimsicality are synonyms defined as:

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

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

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