protograph vs reprint

protograph

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

  • A projected graph. 

reprint

noun
  • A book, pamphlet or other printed matter that has been published once before but is now being released again. 

verb
  • To print (something) that has been published in print before. 

  • To renew the impression of. 

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