Halfrican vs mestizo

Halfrican

noun
  • A person who is biracial, with one black parent and one of another race. 

mestizo

noun
  • A person of mixed ancestry, especially one of Spanish and Native American heritage. 

  • a person of mixed ancestry, especially one of native Filipino and Spanish or Chinese ancestry, such as that of the Spanish mestizos and Chinese mestizos from the Spanish Colonial Era of the Philippines. 

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