mistake vs modification

mistake

verb
  • To understand wrongly, taking one thing or person for another. 

noun
  • An error; a blunder. 

  • A pitch which was intended to be pitched in a hard-to-hit location, but instead ends up in an easy-to-hit place. 

modification

noun
  • A change to an organism as a result of its environment that is not transmissable to offspring. 

  • the change undergone by a word when used in a construction (for instance am => 'm in I'm) 

  • The act of making a change to something while keeping its essential character intact; an alteration or adjustment. 

  • a change to a word when it is borrowed by another language 

  • The result of modifying something; a new or changed form. 

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