colostrum vs fore-milk

colostrum

noun
  • A mixture of turpentine and egg yolk, formerly used as an emulsion. 

  • A form of milk produced by the mammary glands in late pregnancy and the few days after giving birth. Human and bovine colostrum is thick and yellowish. In humans, it has high concentrations of nutrients and antibodies, but it is small in quantity. 

fore-milk

How often have the words colostrum and fore-milk occurred in a corpus of books? (source: Google Ngram Viewer )