grey vs metis

grey

adj
  • Synonym of coloured (pertaining to the mixed race of black and white). 

  • UK and Commonwealth standard spelling of gray. 

verb
  • UK and Commonwealth standard spelling of gray. 

noun
  • UK and Commonwealth standard spelling of gray. 

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. 

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