coin flip vs likeliness

coin flip

noun
  • Synonym of coin toss 

likeliness

noun
  • The condition or quality of being probable or likely to occur. 

  • Likeness; similarity. 

  • Suitability; agreeableness. 

  • Likelihood, probability or chance of occurrence; plausibility or believability. 

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