mountain cranberry vs teaberry

mountain cranberry

noun
  • The cowberry, Vaccinium vitis-idaea 

  • The mountain bearberry, Arctostaphylos alpina 

teaberry

noun
  • A pinkish-white edible berry which grows in the Falkland Islands, where the fruits are harvested annually by Islanders to make cakes, confectionary and pavlovas. On the South American mainland the leaves are brewed for tea (Myrteola nummularia). 

  • A berry which is the fruit of a small shrub native to northeastern North America, Gaultheria procumbens (eastern teaberry, American wintergreen, boxberry, checkerberry). 

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