rascality vs mischievousness

rascality and mischievousness both are nouns.

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

As nouns, rascality and mischievousness are synonyms defined as:

rascality and mischievousness: reckless or malicious behavior that causes discomfort or annoyance in others

Other synonyms of rascality include devilment, devilry, deviltry, mischief-making, mischief, roguery, roguishness, shenanigan.

As nouns, mischievousness is a hypernym of rascality; that is, mischievousness is a word with a broader meaning than rascality:

Other hypernyms of rascality include badness, naughtiness.

rascality (noun)	mischievousness (noun)
reckless or malicious behavior that causes discomfort or annoyance in others	reckless or malicious behavior that causes discomfort or annoyance in others
the trait of indulging in disreputable pranks	an attribute of mischievous children
the quality of being a slippery rascal	the trait of behaving like an imp