brown sugar vs sucrose

brown sugar

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

  • An attractive black woman. 

  • Heroin. 

  • Refined sugar to which molasses has been added. 

sucrose

noun
  • A disaccharide with formula C₁₂H₂₂O₁₁, consisting of two simple sugars, glucose and fructose; normal culinary sugar. 

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