podcast vs publish

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. 

publish

verb
  • To make (information such as an event) available to components that wish to be notified (subscribers). 

  • To issue the work of (an author). 

  • To be made available in a printed publication or other medium. 

  • To have one's work accepted for a publication. 

  • To issue (something, such as printed work) for distribution and/or sale. 

  • To announce to the public. 

  • To disseminate (a message) publicly via a newsgroup, forum, blog, etc. 

  • To issue a medium (e.g. publication). 

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