dump on vs pull apart

dump on

verb
  • To complain to (someone) extensively; to (figuratively) transfer one's problems to (someone) by complaining to them. 

  • To finish a romantic relationship with (someone). 

pull apart

verb
  • Used other than figuratively or idiomatically: see pull, apart. 

  • to separate two people or animals that are fighting 

  • to become separated as a result of pulling 

  • to dismantle a machine or other mechanical device. 

  • to rigorously investigate the basis of an idea or theory. 

How often have the words dump on and pull apart occurred in a corpus of books? (source: Google Ngram Viewer )