Bacchanalian vs wassailing

Bacchanalian

noun
  • A bacchanal; a drunken reveler. 

adj
  • Of or pertaining to the festival of Bacchus; relating to or given to reveling and drunkenness. 

wassailing

noun
  • The act of performing a wassail. 

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