mouthing vs publication

mouthing

noun
  • Ranting; passionate speech devoid of meaning. 

  • The act of forming a shape with the mouth, especially as part of sign language. 

publication

noun
  • The act of publishing printed or other matter. 

  • An issue of printed or other matter, offered for sale or distribution. 

  • The communication of information to the general public etc. 

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