belt-tightening vs interruption

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

interruption

noun
  • A time interval during which there is a cessation of something. 

  • The act of interrupting, or the state of being interrupted. 

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