amuse oneself vs fidget

amuse oneself

fidget

noun
  • A person who fidgets, especially habitually. 

  • A nervous wriggling or twitching motion. 

  • A toy intended to be fidgeted with. 

verb
  • To cause to fidget; to make uneasy. 

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

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