foolishness vs craziness

foolishness and craziness both are nouns.

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

As nouns, foolishness and craziness are synonyms defined as:

Other synonyms of foolishness include folly, madness.

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