come clean vs put on

come clean

verb
  • 1921, B. M. Bower, chapter 6, in Sawtooth Ranch 

  • To confess; admit the truth. 

  • 1977 Oct. 23, John Gardner, "The World Of Tolkien," New York Times (retrieved 12 Sept 2013) 

  • 2005 August 8, "Quotes of the Day," Time (retrieved 12 Sept 2013) 

put on

verb
  • To assume, adopt or affect; to behave in a particular way as a pretense. 

  • To don (clothing, equipment, or the like). 

  • To initiate cooking or warming, especially on a stovetop. 

  • To perform for an audience. 

  • To organize a performance for an audience. 

  • To fool, kid, deceive. 

  • Used other than figuratively or idiomatically: see put, on. 

  • To bet on. 

  • To play (a recording). 

How often have the words come clean and put on occurred in a corpus of books? (source: Google Ngram Viewer )