ambiguity vs dependence

ambiguity

noun
  • words or statements that are open to more than one interpretation, explanation or meaning, especially if that meaning cannot be determined from its context. 

  • The state of being ambiguous. 

dependence

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

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

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