protograph vs reproduction

protograph

noun
  • The original manuscript of a given text, from which all further copies derive. 

  • A projected graph. 

reproduction

noun
  • The act of making copies. 

  • The act of reproducing new individuals biologically. 

  • A copy of something, as in a piece of art; a duplicate. 

  • A method for reproducing a bug or problem. 

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