belt-tightening vs frugality

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

frugality

noun
  • The quality of being frugal; prudent economy; thrift. 

  • A sparing use; sparingness. 

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