woodpecker vs yaffle

woodpecker

noun
  • Any bird of species-rich family Picidae, with a strong pointed beak suitable for pecking holes in wood. 

  • Type 92 heavy machine gun 

yaffle

noun
  • The European green woodpecker, Picus viridis. 

verb
  • Of the green woodpecker: to make its distinctive cry. 

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