emolument vs set-off

emolument

noun
  • Payment for employment or an office; compensation for a job, which is usually monetary. 

set-off

noun
  • A counterclaim; a cross debt or demand; a distinct claim filed or set up by the defendant against the plaintiff's demand. 

  • That which is set off against another thing; an offset. 

  • An offset. 

How often have the words emolument and set-off occurred in a corpus of books? (source: Google Ngram Viewer )