earful vs jungle drums

earful

noun
  • intimate gossip 

  • an angry reprimand, castigation or telling off 

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 earful and jungle drums occurred in a corpus of books? (source: Google Ngram Viewer )