nightcap vs palm wine

nightcap

noun
  • A beverage drunk before bed that is usually alcoholic. 

  • Something that a person reads or listens to before bed. 

  • The final match of a sporting contest, especially the second game of a baseball doubleheader. 

  • A warm cloth cap worn while sleeping, often with pajamas, being common attire in northern Europe before effective home heating became widespread. 

  • A cap drawn over the face of the condemned person before they are hanged. 

verb
  • To drink an alcoholic beverage shortly before retiring to bed. 

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 nightcap and palm wine occurred in a corpus of books? (source: Google Ngram Viewer )