taro vs taro plant

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. 

taro plant

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