polysaccharide vs sucrose

polysaccharide

noun
  • A polymer made of many saccharide units linked by glycosidic bonds. 

sucrose

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

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