half blood vs half-breed

half blood

noun
  • A person whose father and mother are of different races; a half-breed 

  • A person who shares one parent with another; a half-sibling. 

half-breed

noun
  • A person of mixed racial parentage or ancestry, especially one of mixed white and American Indian parentage (metis, métis, Metis, Métis; mestizo). 

  • A hybrid animal or plant. 

adj
  • Having dual heritage; having mixed racial parentage or ancestry. 

  • Hybridized; having one purebred parent; descended from parents of different breeds or with different traits. 

How often have the words half blood and half-breed occurred in a corpus of books? (source: Google Ngram Viewer )