fidget vs twiddle

fidget

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

  • To cause to fidget; to make uneasy. 

noun
  • A person who fidgets, especially habitually. 

  • A nervous wriggling or twitching motion. 

  • A toy intended to be fidgeted with. 

twiddle

verb
  • To wiggle, fidget or play with; to move around. 

  • To flip or switch two adjacent bits (binary digits). 

  • To play with anything; hence, to be busy about trifles. 

  • To be in an equivalence relation with. 

noun
  • A small decorative embellishment. 

  • A slight twist with the fingers. 

  • A wiggling movement. 

  • A tilde. 

  • A tiny bit 

  • A drawn line that is curvy or twisted. 

  • A small musical flourish. 

  • A tizzy 

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