ambiguity vs clearness

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. 

clearness

noun
  • The state of being free from obstruction or interference. 

  • The state of being free from obscurities or opacity; distinctness of light, colour etc. 

  • Mental or sensory distinctness; clarity of understanding, perception etc. 

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