mountain cranberry vs shinleaf

mountain cranberry

noun
  • The cowberry, Vaccinium vitis-idaea 

  • The mountain bearberry, Arctostaphylos alpina 

shinleaf

noun
  • A perennial ericaceous herb (Pyrola elliptica) with a cluster of radical leaves and a raceme of greenish-white flowers. 

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