airing vs radiocommunication

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. 

radiocommunication

noun
  • Any means of communication using radio or other electromagnetic waves 

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