abusage vs barbarism

abusage

noun
  • Improper or incorrect use of language. 

barbarism

noun
  • An error in language use within a single word, such as a mispronunciation. 

  • The condition of existing barbarically. 

  • A barbaric act. 

  • A word hybridizing Ancient Greek and Latin or other heterogeneous roots. 

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