cassava vs taro

cassava

noun
  • Tapioca, a starchy pulp made with manioc roots. 

  • Manioc (Manihot esculenta), a tropical plant which is the source of tapioca. 

taro

noun
  • Food from a taro plant. 

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

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

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