Madness
Part of speech: noun
Definition: The state of being mad; insanity; mental disease. rash folly
Example sentence: I can calculate the motion of heavenly bodies, but not the madness of people.
Foolishness
Part of speech: noun
Definition: The state of being foolish.A thing or event that is foolish, or an absurdity.
Example sentence: Each day, and the living of it, has to be a conscious creation in which discipline and order are relieved with some play and pure foolishness.