mango vs tree fork

mango

noun
  • A tropical Asian fruit tree, Mangifera indica. 

  • A pickled vegetable or fruit with a spicy stuffing; a vegetable or fruit which has been mangoed. 

  • Any of various hummingbirds of the genus Anthracothorax. 

  • A type of muskmelon, Cucumis melo. 

  • A yellow-orange color, like that of mango flesh. 

  • The fruit of the mango tree. 

verb
  • To stuff and pickle (a fruit). 

tree fork

noun
  • A bifurcation in the trunk of a tree giving rise to two roughly equal diameter branches. 

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