fidget vs fool around

fidget

verb
  • To cause to fidget; to make uneasy. 

  • To wiggle or twitch; to move the body, especially the fingers, around nervously or idly. 

noun
  • A person who fidgets, especially habitually. 

  • A nervous wriggling or twitching motion. 

  • A toy intended to be fidgeted with. 

fool around

verb
  • To engage in frivolous behaviour; to monkey around. 

  • To engage in adultery; to play around. 

  • To waste time. 

  • To engage in casual or flirtatious sexual acts. 

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