attrit vs diminution

attrit

noun
  • One who voluntarily or involuntarily leaves a company; a termed employee. 

verb
  • To be reduced in quantity through attrition. 

  • To lose, or to kill, troops by attrition due to sustained firepower. 

  • To engage in attrition; to quit or drop out. 

  • To wear down through attrition, especially mechanical attrition. 

diminution

noun
  • A lessening, decrease or reduction. 

  • a compositional technique where the composer shortens the melody by shortening its note values. 

  • The act or process of making diminutive. 

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