radiogram vs telex

radiogram

noun
  • A message, like a telegram, transmitted by radio rather than wires. 

  • An entertainment device that combined a radio and a record player or gramophone. 

  • A radiograph 

telex

noun
  • A teletype message sent through such a network. 

  • A teletype device connected to such a network. 

  • A network of teletypes. 

verb
  • To send a message over a telex network. 

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