boob vs keyboarding mistake

boob

verb
  • To make a mistake. 

  • To behave stupidly; to act like a boob. 

noun
  • A mistake. 

  • A prison; jail. 

  • A breast, especially that of an adult or adolescent female human. 

  • An idiot; a fool. 

keyboarding mistake

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