beverage vs kvass

beverage

noun
  • A liquid to consume; a drink, such as tea, coffee, liquor, beer, milk, juice, or soft drinks, usually excluding water. 

kvass

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

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