backbite vs talk shit

backbite

verb
  • To speak badly of an absent individual. 

  • To attack from behind or when out of earshot with spiteful or defamatory remarks. 

  • To make spiteful slanderous or defamatory statements about someone. 

noun
  • One who engages in backbiting; a backbiter. 

talk shit

verb
  • To untruthfully speak of another in a belittling, deprecative, slighting manner, either in person or in absentia. 

  • To speak nonsense or to lie. 

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