belt-tightening vs deflation

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

deflation

noun
  • A decrease in the general price level, that is, in the nominal cost of goods and services as well as wages. 

  • The removal of soil and other loose material from the ground (or another surface) by wind, leaving it exposed to erosion. 

  • An act or instance of deflating. 

  • An economic contraction. 

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