craziness vs foolishness

craziness and foolishness both are nouns.

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

As nouns, craziness and foolishness are synonyms defined as:

Other synonyms of craziness include folly, madness.

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