colourant vs rinse

colourant

noun
  • A pigment, dye etc added to something to change its colour or hue 

rinse

noun
  • A liquid used to rinse, now particularly a hair dye. 

  • The action of rinsing. 

verb
  • To wash (something) quickly using water and no soap. 

  • To thoroughly defeat in an argument, fight or other competition. 

  • To remove soap from (something) using water. 

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