mischievousness vs deviltry

mischievousness and deviltry both are nouns.

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

As nouns, mischievousness and deviltry are synonyms defined as:

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

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

mischievousness (noun)	deviltry (noun)
reckless or malicious behavior that causes discomfort or annoyance in others	wicked and cruel behavior
an attribute of mischievous children	reckless or malicious behavior that causes discomfort or annoyance in others
the trait of behaving like an imp