ambiguity vs double meaning

ambiguity

noun
  • The state of being ambiguous. 

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

double meaning

noun
  • A deliberate construction that plays on two separate meanings of a word or words; a pun. 

  • The situation in which a word or phrase has two different, often opposite, meanings. For example, wicked can mean both "good" and "bad". 

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