dependence vs subtraction

dependence

noun
  • The state of being dependent, of relying upon another. 

  • An irresistible physical or psychological need, especially for a chemical substance. 

subtraction

noun
  • The process of subtracting a number from another. 

  • A calculation involving subtracting. 

  • The removal of something. 

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