airing vs showing

airing

noun
  • A public expression of an opinion or discussion of a subject. 

  • The broadcast of a television or radio show. 

  • An exposure to warm or fresh air. 

showing

noun
  • A result, a judgement. 

  • An occasion when something is shown. 

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