lactose vs white lady

lactose

noun
  • The disaccharide sugar of milk and dairy products, C₁₂H₂₂O₁₁, a product of glucose and galactose used as a food and in medicinal compounds. 

white lady

noun
  • A cocktail made from creme de menthe, Cointreau, lemon juice and an egg white 

  • Cocaine. 

  • A female ghost dressed in white, who is associated with local legends of tragedy. 

  • Used other than figuratively or idiomatically: see white, lady. 

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