whimsicality vs playfulness

whimsicality and playfulness both are nouns.

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

As nouns, playfulness is a hypernym of whimsicality; that is, playfulness is a word with a broader meaning than whimsicality:

Other hypernyms of whimsicality include fun.

whimsicality (noun)	playfulness (noun)
the trait of behaving like an imp	activities that are enjoyable or amusing
the trait of acting unpredictably and more from whim or caprice than from reason or judgment	a disposition to find (or make) causes for amusement
	a festive merry feeling