palimpsest vs parchment

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. 

parchment

noun
  • Stiff paper imitating that material. 

  • A document made on such material. 

  • The creamy to tanned color of parchment. 

  • Material, made from the polished skin of a calf, sheep, goat or other animal, used like paper for writing. 

  • The envelope of the coffee grains, inside the pulp. 

  • A diploma (traditionally written on parchment). 

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