airing vs live stream

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. 

live stream

noun
  • A real-time broadcast of audio or video over the Internet. 

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