dependence vs despair

dependence

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

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

despair

verb
  • To be hopeless; to have no hope; to give up all hope or expectation. 

  • To cause to despair. 

noun
  • That which causes despair. 

  • Loss of hope; utter hopelessness; complete despondency. 

  • That which is despaired of. 

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