boff vs spang

boff

verb
  • To hit; to strike. 

  • to have sexual intercourse (with someone) 

noun
  • A great success; a hit. 

  • A pupil who works hard; a swot. 

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

  • A big laugh. 

  • A hit or smack. 

spang

verb
  • To strike or ricochet with a loud report 

  • To set with bright points: star or spangle. 

  • To hitch; fasten. 

  • To cause to spring; set forcibly in motion; throw with violence. 

  • To leap; spring. 

noun
  • A bound or spring; a leap. 

  • A span. 

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