common wood pigeon vs culver

common wood pigeon

noun
  • The wood pigeon, Columba palumbus 

culver

noun
  • A dove or pigeon, now specifically of the species Columba palumbus. 

  • A culverin, a kind of handgun or cannon. 

How often have the words common wood pigeon and culver occurred in a corpus of books? (source: Google Ngram Viewer )