madness vs folly

madness and folly both are nouns.

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

As nouns, madness and folly are synonyms defined as:

Other synonyms of madness include craziness, foolishness.

madness (noun)	folly (noun)
unrestrained excitement or enthusiasm	foolish or senseless behavior
the quality of being rash and foolish	a stupid mistake
a feeling of intense anger	the trait of acting stupidly or rashly
obsolete terms for legal insanity	the quality of being rash and foolish
an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain