buzzard vs kestrel

buzzard

noun
  • Any of several Old World birds of prey of the genus Buteo with broad wings and a broad tail. 

  • In North America, a curmudgeonly or cantankerous man; an old person; a mean, greedy person. 

  • Any scavenging bird, such as the American black vulture (Coragyps atratus) or the turkey vulture (Cathartes aura). 

  • Synonym of double bogey 

kestrel

noun
  • Any of various small falcons of the genus Falco that hover while hunting. 

  • The common kestrel, Falco tinnunculus. 

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