belt-tightening vs minimization

belt-tightening

noun
  • A reduction in expenditure, often as a result of financial restrictions. 

adj
  • Causing or involving a reduction in expenditure. 

minimization

noun
  • The act of lowering something to its smallest value or extent. 

  • The tendency to present events as trivial or unimportant; trivialization 

  • The process of finding the minimum value of a function. 

How often have the words belt-tightening and minimization occurred in a corpus of books? (source: Google Ngram Viewer )