newscast vs podcast

newscast

verb
  • To broadcast the news. 

noun
  • A broadcast of the news; a news report that is transmitted over the air for television, radio, etc. 

podcast

verb
  • To deliver (information) in the form of a programme, especially an audio programme, over the Internet on a regular basis for playback on computers or portable devices such as mobile phones. 

  • To deliver a programme, especially an audio programme, over the Internet on a regular basis for playback on computers or portable devices such as mobile phones. 

noun
  • A programme, especially an audio programme, produced on a regular basis, delivered over the Internet in a compressed digital format and designed for playback on computers or portable devices such as mobile phones. 

  • An individual episode of such a programme. 

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