blueberry vs cranberry

blueberry

noun
  • The shrub of the above-mentioned berry. 

  • A dark blue colour. 

  • An edible round berry, belonging to the cowberry group (Vaccinium sect. Cyanococcus), with flared crowns at the end, that turns blue on ripening. 

adj
  • Of a dark blue colour. 

verb
  • To gather or forage for blueberries. 

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. 

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