retrenchment vs shortening

retrenchment

noun
  • An act of reducing expenses; economizing. 

  • A curtailment or reduction. 

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

shortening

noun
  • Fat that is solid at room temperature, such as margarine or lard (not usually used of butter), used to make shortcrust pastry. 

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