catachresis vs vulgarism

catachresis

noun
  • Such a misuse involving some similarity of sound between the misused word and the appropriate word. 

  • A misapplication or overextension of figurative or analogical description; a wrongly applied metaphor or trope. 

  • A misuse of a word; an application of a term to something which it does not properly denote. 

vulgarism

noun
  • A spelling, word, or phrase used in common speech that is considered improper or incorrect for formal communication. 

  • Editors of newspapers allow more vulgarisms to go to print today than they used to. 

  • A word or term that is considered offensive or vulgar. 

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