disarticulation vs retrenchment

disarticulation

noun
  • The act of disarticulating. 

  • Some amputations: where a joint is disarticulated: e.g. knee, hip, elbow or shoulder disarticulation. 

retrenchment

noun
  • A curtailment or reduction. 

  • An act of reducing expenses; economizing. 

  • An act of terminating the employment of a worker or making an employee redundant, often to reduce expenses; a layoff. 

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