origin vs skin color

origin

noun
  • Ancestry. 

  • The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle. 

  • An arbitrary point on Earth's surface, chosen as the zero for a system of coordinates. 

  • The source of a river, information, goods, etc. 

  • The beginning of something. 

  • The point at which the axes of a coordinate system intersect. 

skin color

noun
  • One's ethnicity. 

  • The color of human skin. 

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