biased vs of color

biased

adj
  • Exhibiting bias; prejudiced. 

  • Exhibiting a systematic distortion of results due to a factor not allowed for in its derivation; skewed. 

  • Angled at a slant. 

  • On which an electrical bias is applied. 

of color

adj
  • Nonwhite; of a race other than white, for example black. 

  • Belonging to a category of people with mixed black and white ancestry in the Americas in the 18th and early 19th centuries. 

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