belt-tightening vs deletion

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

deletion

noun
  • The act of deleting. 

  • An item that has been or will be deleted. 

  • An act of killing or murder. 

  • A mutation in which a gene, or other section of DNA, is removed from a chromosome. 

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