whimsicality vs mischievousness

whimsicality and mischievousness both are nouns.

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

As nouns, whimsicality and mischievousness are synonyms defined as:

Other synonyms of whimsicality include impishness, puckishness.

whimsicality (noun)	mischievousness (noun)
the trait of behaving like an imp	reckless or malicious behavior that causes discomfort or annoyance in others
the trait of acting unpredictably and more from whim or caprice than from reason or judgment	an attribute of mischievous children
	the trait of behaving like an imp