pendulum vs ticker

pendulum

noun
  • A watch's guard-ring by which it is attached to a chain. 

  • Used to refer to the tendency of a situation to oscillate (between two extremes). 

  • A lamp, etc. suspended from a ceiling. 

  • A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices such as clocks. 

ticker

noun
  • A watch (timepiece). 

  • A heart, especially a human one. 

  • One who makes a tick mark. 

  • A birdwatcher who aims to see (and tick off on a list) as many bird species as possible. 

  • A ticker tape, either the traditional paper kind or a scrolling message on a screen. 

  • A measuring or reporting device, particularly one which makes a ticking sound as the measured events occur. 

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