new cocoyam vs taro

new cocoyam

noun
  • The cocoyam Xanthosoma sagittifolium (or other Xanthosoma), so called to distinguish it from old cocoyam. 

taro

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

  • Food from a taro plant. 

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

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