ambiguity vs diagnosis

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. 

diagnosis

verb
  • Synonym of diagnose 

noun
  • The identification of the nature and cause of something (of any nature). 

  • A written description of a species or other taxon serving to distinguish that species from all others; especially a description written and published in Latin. 

  • The identification of the nature and cause of an illness. 

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