fidget vs yo-yo

fidget

noun
  • A toy intended to be fidgeted with. 

  • A person who fidgets, especially habitually. 

  • A nervous wriggling or twitching motion. 

verb
  • To cause to fidget; to make uneasy. 

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

yo-yo

noun
  • A toy consisting of a spheroidal or cylindrical spindle having a circular groove in which string is wound; it is used by holding the string in the fingers and reeling the spindle up and down by movements of the wrist. 

  • A cloth rosette formed by gathering the outside edge of a circle of fabric in toward the centre using a running stitch. 

  • Someone who vacillates. 

  • A dogfighting maneuver involving the attacker temporarily exchanging altitude for airspeed, or vice versa, in order to rapidly catch up with the defender or to prevent an overshoot. 

  • A volatile market that moves up and down. 

  • A foolish, annoying or incompetent person. 

verb
  • To vacillate; to move up and down. 

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