boff vs thump

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. 

thump

verb
  • To hit (someone or something) as if to make a thump. 

  • To throb with a muffled rhythmic sound. 

  • To cause to make a thumping sound. 

  • To thud or pound. 

noun
  • A blow that produces a muffled sound. 

  • The sound of such a blow; a thud. 

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