bookfell vs typescript

bookfell

noun
  • A vellum or parchment manuscript. 

  • A skin prepared for writing upon; a sheet of vellum or parchment; paper. 

typescript

noun
  • typewritten material, especially such a copy of a manuscript 

verb
  • To transcribe into typewritten form. 

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