malanga vs tannia

malanga

noun
  • Taro (Colocasia esculenta) 

  • Chinese taro (Alocasia cucullata, syn. Caladium colocasia). 

  • Any of several Central and South American plants, of the genus Xanthosoma; yautia. 

  • The edible tuber of these plants, some of which have medicinal value. 

tannia

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