mischief vs shenanigan

mischief and shenanigan both are nouns.

Word	Noun	Adjective	Verb	Adverb
mischief	Yes	No	No	No
shenanigan	Yes	No	No	No

As nouns, mischief and shenanigan are synonyms defined as:

mischief and shenanigan: reckless or malicious behavior that causes discomfort or annoyance in others

mischief (noun)	shenanigan (noun)
reckless or malicious behavior that causes discomfort or annoyance in others	reckless or malicious behavior that causes discomfort or annoyance in others
the quality or nature of being harmful or evil	the use of tricks to deceive someone (usually to extract money from them)