eddo vs taro

eddo

noun
  • A plant (Colocasia esculenta, but often identified as Colocasia antiquorum, among numerous other synonyms), which is usually considered a variety of C. esculenta, with edible starchy tubers. 

  • The tubers of this plant. 

taro

noun
  • Colocasia esculenta, raised as a food primarily for its corm, which distantly resembles potato. 

  • Any of several other species with similar corms and growth habit in Colocasia, Alocasia etc. 

  • Food from a taro plant. 

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