camote vs ipomoea

camote

noun
  • sweet potato (Ipomoea batatas) 

ipomoea

noun
  • Any of various twining plants of the genus Ipomoea with showy monopetalous flowers, including the morning glory, the sweet potato, and the cypress vine. 

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