methanol vs wood spirit

methanol

noun
  • The simplest aliphatic alcohol, CH₃OH; a colourless, toxic, inflammable liquid, used as a solvent, antifreeze, in the chemical industry, and in the preparation of methylated spirit. 

wood spirit

noun
  • Methanol, a type of alcohol. 

  • A dryad or other spiritual being associated with forests, woods, or trees. 

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