notebook vs parchment

notebook

noun
  • A book in which notes or memoranda are written. 

  • A kind of user interface in literate programming, allowing calculations to be interspersed with human-readable comments, diagrams, etc. 

parchment

noun
  • A diploma (traditionally written on parchment). 

  • 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. 

  • Stiff paper imitating that material. 

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