alchemy vs rune

alchemy

noun
  • Any elaborate transformation process or algorithm. 

  • The causing of any sort of mysterious sudden transmutation. 

  • The premodern and early modern study of physical changes, particularly in Europe, Arabia, and China and chiefly in pursuit of an elixir of immortality, a universal panacea, and/or a philosopher's stone able to transmute base metals into gold, eventually developing into chemistry. 

rune

noun
  • A letter, or character, used in the written language of various ancient Germanic peoples, especially the Scandinavians and the Anglo-Saxons. 

  • A Finnish or Scandinavian epic poem, or a division of one, especially a division of the Kalevala. 

  • A verse or song, especially one with mystical or mysterious overtones; a spell or an incantation. 

  • A letter or mark used as a mystical or magic symbol. 

  • A Unicode code point. 

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