blend vs half blood

blend

noun
  • A mixture of two or more things. 

  • A word formed by combining two other words; a grammatical contamination, portmanteau word. 

verb
  • To be mingled or mixed. 

  • To mingle; to mix; to unite intimately; to pass or shade insensibly into each other. 

half blood

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

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

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