playfulness vs diversion

playfulness and diversion both are nouns.

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

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

Other hypernyms of playfulness include recreation.

playfulness (noun)	diversion (noun)
activities that are enjoyable or amusing	an activity that diverts or amuses or stimulates
a disposition to find (or make) causes for amusement	a turning aside (of your course or attention or concern)
a festive merry feeling	an attack calculated to draw enemy defense away from the point of the principal attack