scutter vs tick over

scutter

verb
  • To run with a light pattering noise; to skitter. 

  • To void thin excrement. 

noun
  • Thin excrement. 

  • A hasty run. 

tick over

verb
  • to idle (to run at a slow speed, or out of gear). 

  • To run smoothly and without problems. 

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