brown sugar vs palm sugar

brown sugar

noun
  • Refined sugar to which molasses has been added. 

  • An attractive black woman. 

  • Heroin. 

  • Sugar which has been only partially refined and still contains molasses. 

palm sugar

noun
  • sugar made from the sap of various species of palm tree, family Arecaceae. 

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