cattle call vs conversation

cattle call

noun
  • An audition which is open to the public and thus draws a large number of applicants, many of whom are inexperienced. 

conversation

noun
  • Expression and exchange of individual ideas through talking with other people; also, a set instance or occasion of such talking. 

  • The protocol-based interaction between systems processing a transaction. 

  • The back-and-forth play of the blades in a bout. 

verb
  • To engage in conversation (with). 

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