belt-tightening vs cropping

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

cropping

noun
  • The act by which something is cut short or truncated. 

  • An outcrop that is mined for the ore it contains. 

  • The growing of crops. 

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