grape vs jungle drums

grape

noun
  • A woody vine of genus Vitis that bears clusters of grapes; a grapevine. 

  • A dark purplish-red colour, the colour of many grapes. 

  • A small, round, smooth-skinned edible fruit, usually purple, red, or green, that grows in bunches on vines of genus Vitis. 

  • A mangy tumour on a horse's leg. 

  • Any of various fruits or plants with varying resemblances to those of genus Vitis but belonging to other genera; their edibility varies. 

  • A person's head. 

  • A purple-shirted technician responsible for refueling aircraft. 

verb
  • To grope. 

  • To pick grapes. 

  • To envy (derived from "sour grapes" idiom). 

  • To develop tubercules as a result of tuberculosis. 

  • To develop a texture with small grape-like clusters of a contaminant or foreign substance. 

adj
  • Containing grapes or having a grape flavor. 

  • Of a dark purplish red colour. 

jungle drums

noun
  • An informal network of news and gossip; the grapevine. 

  • Drumming performed, or as performed, in the rituals of traditional pre-industrial societies. 

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