metis vs stained

metis

adj
  • Of mixed heritage 

  • Of Métis heritage. 

noun
  • A person of mixed-race ancestry. 

  • A person of one-eighth black ancestry; an octoroon. 

  • Practical intelligence; street smarts. 

stained

adj
  • coloured by adding a pigment 

  • having a stain 

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