boff vs smush

boff

verb
  • to have sexual intercourse (with someone) 

  • To hit; to strike. 

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. 

smush

verb
  • To engage in intimate contact, especially sexual relations. 

  • to mash; or push; especially to push down or in; compress 

noun
  • A beaten or pulverized mass. 

  • An act of crushing or squeezing. 

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