cherry pie vs mulberry

cherry pie

noun
  • Any of various willowherbs 

  • Heliotropium arborescens. 

  • A pie baked with a cherry filling. 

mulberry

noun
  • The fruit of this tree. 

  • Any of several trees, of the genus Morus, having edible fruits. 

  • A dark purple colour tinted with red. 

adj
  • Of a dark purple color tinted with red. 

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