ricochet vs skirr

ricochet

verb
  • To rebound off something wildly in a seemingly random direction. 

  • To operate upon by ricochet firing. 

noun
  • A method of firing a projectile so that it skips along a surface. 

  • An instance of ricocheting; a glancing rebound. 

skirr

verb
  • To leave hastily; to flee, especially with a whirring sound 

  • to pass over quickly, skim 

  • To make a whirring sound. 

  • To search about in, scour 

noun
  • A tern. 

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