fool vs joke

fool

verb
  • To act in an idiotic manner; to act foolishly. 

  • To trick; to deceive. 

noun
  • A type of dessert made of puréed fruit and custard or cream. 

  • A jester; a person whose role was to entertain a sovereign and the court (or lower personages). 

  • A person with poor judgment or little intelligence. 

  • A particular card in a tarot deck, representing a jester. 

  • Someone who derives pleasure from something specified. 

  • Buddy, dude, man. 

adj
  • Foolish. 

joke

verb
  • To dupe in a friendly manner for amusement; to mess with, play with. 

  • To do or say something for amusement rather than seriously. 

noun
  • An amusing story. 

  • The root cause or main issue, especially an unexpected one 

  • A laughably worthless thing or person; a sham. 

  • Something that is far easier or far less challenging than expected. 

  • Something said or done for amusement, not in seriousness. 

How often have the words fool and joke occurred in a corpus of books? (source: Google Ngram Viewer )