buteo vs vulture

buteo

noun
  • Any of the broad-winged soaring raptors of the genus Buteo. 

vulture

noun
  • Any of several carrion-eating birds of the families Accipitridae and Cathartidae. 

  • A person who profits from the suffering of others. 

verb
  • To circle around one's target as if one were a vulture. 

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