lactose vs lambchop

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. 

lambchop

noun
  • A chop or rib of lamb. 

  • A term of endearment. 

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