epilogue vs lead-in

epilogue

noun
  • A short speech, spoken directly at the audience at the end of a play 

  • A component of a computer program that prepares the computer to return from a routine. 

  • The performer who gives this speech 

  • A brief oration or script at the end of a literary piece; an afterword 

verb
  • To conclude with an epilogue. 

lead-in

noun
  • A short phrase that begins the caption of a photograph. 

  • An introduction; something that leads into the beginning of something. 

  • A region of data at the beginning of a compact disc, holding the table of contents. 

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