arrack vs kvass

arrack

noun
  • An alcoholic drink made from sugar cane and fermented red rice in Indonesia. 

  • An alcoholic drink distilled from coconut palm flowers in South Asia. 

kvass

noun
  • A fermented cereal-based low alcoholic beverage, often flavored with fruit, honey and herbs. 

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