folio vs palimpsest

folio

noun
  • A wrapper for loose papers. 

  • A page in an account book; sometimes, two opposite pages bearing the same serial number. 

  • A book made of sheets of paper each folded in half (two leaves or four pages to the sheet); hence, a book of the largest kind, exceeding 30 cm in height. 

  • A page number. The even folios are on the left-hand pages and the odd folios on the right-hand pages. 

  • a leaf of a book or manuscript 

  • A page of a book, that is, one side of a leaf of a book. 

  • A sheet of paper folded in half. 

verb
  • to put a serial number on each folio or page of (a book); to page 

palimpsest

noun
  • A manuscript or document that has been erased or scraped clean, for reuse of the paper, parchment, vellum, or other medium on which it was written. 

  • The partial erasure of or superimposition on an older society or culture by a newer one. 

  • Something bearing the traces of an earlier, erased form. 

  • Geological features thought to be related to features or effects below the surface. 

  • Memory that has been erased and re-written. 

  • Circular features believed to be lunar craters that have been obliterated by later volcanic activity. 

verb
  • To scrape clean, as in parchment, for reuse. 

  • On paper: to reuse, often by erasure or change of pen direction or color. Especially fueled by Earth Day. 

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