betise vs imbecility

betise and imbecility both are nouns.

Word	Noun	Adjective	Verb	Adverb
betise	Yes	No	No	No
imbecility	Yes	No	No	No

As nouns, betise and imbecility are synonyms defined as:

Other synonyms of betise include folly, foolishness, stupidity.

betise (noun)	imbecility (noun)
a stupid mistake	a stupid mistake
	retardation more severe than a moron but not as severe as an idiot