pertness vs playfulness

pertness and playfulness both are nouns.

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

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

Other hypernyms of pertness include fun.

pertness (noun)	playfulness (noun)
inappropriate playfulness	activities that are enjoyable or amusing
quality of being lively and confident	a disposition to find (or make) causes for amusement
	a festive merry feeling