imbecility vs folly

imbecility and folly both are nouns.

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

As nouns, imbecility and folly are synonyms defined as:

Other synonyms of imbecility include betise, foolishness, stupidity.

imbecility (noun)	folly (noun)
a stupid mistake	foolish or senseless behavior
retardation more severe than a moron but not as severe as an idiot	a stupid mistake
	the trait of acting stupidly or rashly
	the quality of being rash and foolish