culm vs sugar cane

culm

noun
  • the stem of a plant, especially of grass or sedge 

  • anthracite, especially when found in small masses 

  • waste coal, used as a poor quality fuel; slack. 

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 culm and sugar cane occurred in a corpus of books? (source: Google Ngram Viewer )