announce vs transmit

announce

verb
  • to give public notice, especially for the first time; to make known 

  • to pronounce; to declare by judicial sentence 

transmit

verb
  • To communicate news or information. 

  • To send or convey something from one person, place or thing to another. 

  • To spread or pass on something such as a disease or a signal. 

  • To convey energy or force through a mechanism or medium. 

  • To impart, convey or hand down something by inheritance or heredity. 

  • To send out a signal (as opposed to receive). 

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