belt-tightening vs penny-pinching

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

penny-pinching

noun
  • reluctance to spend money; thrift or parsimony 

  • Instance of extreme economy. 

adj
  • reluctant to spend money; close-fisted 

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