fest vs wassail

fest

noun
  • A gathering for a specified reason or occasion. 

  • An event in which the act denoted by the previous noun occurs. 

wassail

noun
  • A toast to health, usually on a festive occasion. 

  • The beverage served during a wassail, especially one made of ale or wine flavoured with spices, sugar, roasted apples, etc. 

  • A festive or drinking song or glee. 

  • Revelry. 

verb
  • To go from house to house at Christmastime, singing carols. 

  • To toast, to drink to the health of another. 

  • To drink wassail. 

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