abridgment vs disimprovement

abridgment

noun
  • The state of being abridged or lessened. 

  • An epitome or compend, as of a book; a shortened or abridged form; an abbreviation. 

  • The leaving out of certain portions of a plaintiff's demand, the writ still holding good for the remainder. 

  • The act of abridging; reduction or deprivation 

disimprovement

noun
  • Reduction from a better to a worse state. 

  • attempt to make something better while ending up worse than before. 

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