craziness vs folly

craziness and folly both are nouns.

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

As nouns, craziness and folly are synonyms defined as:

Other synonyms of craziness include foolery, indulgence, lunacy, tomfoolery.

As nouns, craziness and folly are synonyms defined as:

Other synonyms of craziness include foolishness, madness.

craziness (noun)	folly (noun)
foolish or senseless behavior	foolish or senseless behavior
the quality of being rash and foolish	a stupid mistake
informal terms for insanity	the trait of acting stupidly or rashly
	the quality of being rash and foolish