belt-tightening vs deduction

belt-tightening

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

adj
  • Causing or involving a reduction in expenditure. 

deduction

noun
  • A sum that can be removed from tax calculations; something that is written off 

  • A conclusion; that which is deduced, concluded or figured out 

  • A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true. 

  • The ability or skill to deduce or figure out; the power of reason 

  • That which is deducted; that which is subtracted or removed 

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