airing vs airwaves

airing

noun
  • The broadcast of a television or radio show. 

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

  • An exposure to warm or fresh air. 

airwaves

noun
  • Radio or television broadcasts. 

  • Radio-frequency electromagnetic waves, usually used in the context of wireless communication; radio waves. 

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