palm wine vs potable

palm wine

noun
  • The alcoholic drink toddy. 

  • A genre of popular music most closely associated with mid-20th-century Sierra Leone. 

potable

noun
  • Any drinkable liquid; a beverage. 

adj
  • Good for drinking without fear of disease or poisoning. 

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