blond vs yellow light

blond

noun
  • A pale yellowish (golden brown) color, especially said of hair color. 

  • A person with this hair color. 

verb
  • To color or dye blond. 

adj
  • Of a bleached or pale golden (light yellowish) colour. 

  • Having blond hair. 

yellow light

noun
  • Used other than figuratively or idiomatically: see yellow, light. 

  • A traffic light, between the green light and the red light, indicating that vehicles should stop if safely possible. 

  • Hesitance to proceed; limited approval or permission to proceed. 

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