devilment vs mischievousness

devilment and mischievousness both are nouns.

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

As nouns, devilment and mischievousness are synonyms defined as:

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

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

devilment (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
	an attribute of mischievous children
	the trait of behaving like an imp