Toby vs yo-yo

Toby

noun
  • The superintendent of a street market. 

name
  • A male given name from Hebrew. 

  • A surname originating as a patronymic. 

  • in the traditional Punch and Judy show the showman's (live) dog trained to take part in the puppet show and to carry a bag around the audience soliciting donations. 

  • A female given name from Hebrew. 

yo-yo

noun
  • A volatile market that moves up and down. 

  • 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 foolish, annoying or incompetent person. 

verb
  • To vacillate; to move up and down. 

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