hatchet job vs hit-piece

hatchet job

noun
  • A journalistic or other treatment which portrays its subject in a very unfavorable manner; a work of criticism which aims to destroy a reputation. 

  • An action or a program which imposes deep reductions in expenditure. 

hit-piece

How often have the words hatchet job and hit-piece occurred in a corpus of books? (source: Google Ngram Viewer )