chromaticity vs mixture

chromaticity

noun
  • An objective specification of the quality of a colour, regardless of its luminance. 

mixture

noun
  • A cloth of variegated colouring. 

  • A medicinal compound, typically a suspension of a solid in a solution 

  • A compound organ stop. 

  • Something that consists of diverse elements. 

  • A mix of different dry foods as a snack, especially chevda or Bombay mix. 

  • The act of mixing. 

  • Something produced by mixing. 

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