cranberry vs pyrola

cranberry

noun
  • A shrub belonging to the section Vaccinium sect. Oxycoccus of the genus Vaccinium. 

  • The edible red berry of that shrub. 

  • An intense red colour, like that of a cranberry 

adj
  • Of the intense red colour of a cranberry. 

pyrola

noun
  • Any of the genus Pyrola of wintergreens. 

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