molasses cane vs sugar cane

molasses cane

noun
  • A plant, commonly sugar cane, maize/corn, sorghum (maize or milo), or other another fructose-producing grass plant (of the family Gramineae) used for production of cane syrup or molasses. 

sugar cane

noun
  • A tropical grass of the genus Saccharum (especially the species Saccharum officinarum, including hybrids) having stout, fibrous, jointed stalks, the sap of which is a source of sugar. 

  • A candy cane, an edible candy in the shape of a cane. 

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