boner vs malapropism

boner

noun
  • An often perverse sense of enjoyment from or predilection towards something. 

  • An erect penis. 

  • Why do guys get boners when they wake up in the morning? 

  • One who or that which bones (removes bones). 

malapropism

noun
  • The blundering use of an absurdly inappropriate word or expression in place of a similar-sounding one. 

  • An instance of this; malaprop. 

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