badness vs prankishness

badness and prankishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
badness	Yes	No	No	No
prankishness	Yes	No	No	No

As nouns, prankishness is a hyponym of badness; that is, prankishness is a word with a more specific, narrower meaning than badness:

Other hyponyms of badness include rascality, roguishness.

badness (noun)	prankishness (noun)
that which is below standard or expectations as of ethics or decency	the trait of indulging in disreputable pranks
used of the degree of something undesirable e.g. pain or weather
an attribute of mischievous children