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

noun
  • A published article or post aiming to sway public opinion by presenting false or biased information in a way that appears objective and truthful. 

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