talk over vs thrash out

talk over

verb
  • To discuss; to converse about a matter or issue. 

  • To persuade (someone); to talk around. 

  • To verbally interrupt (someone); to speak at the same time as someone else. 

thrash out

verb
  • To discuss something so fully as to resolve a problem or conflict; to hammer out. 

How often have the words talk over and thrash out occurred in a corpus of books? (source: Google Ngram Viewer )