palimpsest vs ream

palimpsest

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. 

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

  • 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. 

  • 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. 

ream

verb
  • To remove (material) by reaming. 

  • To sexually penetrate in a rough and painful way. 

  • To yell at or berate. 

  • To enlarge a hole, especially using a reamer; to bore a hole wider. 

  • To shape or form, especially using a reamer. 

  • To cream; mantle; foam; froth. 

  • To remove burrs and debris from a freshly bored hole. 

noun
  • Cream; also, the creamlike froth on ale or other liquor; froth or foam in general. 

  • A bundle, package, or quantity of paper, nowadays usually containing 500 sheets. 

  • An abstract large amount of something. 

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