cranberry vs foxberry

cranberry

noun
  • The edible red berry of that shrub. 

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

  • An intense red colour, like that of a cranberry 

adj
  • Of the intense red colour of a cranberry. 

foxberry

noun
  • The berry of this plant. 

  • The plant cowberry or lingonberry, Vaccinium vitis-idaea. 

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