decrement vs deficit

decrement

noun
  • A small quantity removed or lost. One of a series of regular subtractions. 

verb
  • To decrease a value by a basic quantity unit. 

deficit

noun
  • Deficiency in amount or quality; a falling short; lack. 

  • A situation wherein, or amount whereby, spending exceeds (e.g. government) revenue. 

How often have the words decrement and deficit occurred in a corpus of books? (source: Google Ngram Viewer )