chaparral vs creosote

chaparral

noun
  • The foliage of creosote bush, Larrea divaricata, when used as a medicinal herb. 

  • A region of shrubs, typically dry in the summer and rainy in the winter. The coast of the Mediterranean is such a region. 

creosote

noun
  • The creosote bush. 

  • A similar brown liquid obtained from coal tar used as a wood preservative. 

  • A pale yellow oily liquid, containing phenols and similar compounds, obtained by the destructive distillation of wood tar, once used medicinally. 

verb
  • To apply creosote. 

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