liqueur vs palm wine

liqueur

noun
  • A flavoured alcoholic beverage that is usually very sweet and contains a high percentage of alcohol. 

verb
  • to top up bottles of sparkling wine with a sugar solution 

  • to flavor or treat (wine) with a liqueur 

palm wine

noun
  • The alcoholic drink toddy. 

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

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