boff vs prank

boff

noun
  • A big laugh. 

  • A great success; a hit. 

  • A pupil who works hard; a swot. 

  • A line in a film etc that elicits such a laugh. 

  • A hit or smack. 

verb
  • to have sexual intercourse (with someone) 

  • To hit; to strike. 

prank

noun
  • A practical joke or mischievous trick. 

verb
  • To make an ostentatious show. 

  • To perform a practical joke on; to trick. 

  • To call someone's phone and promptly hang up 

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