ship out vs split up

ship out

verb
  • To leave, get out, or resign. 

  • To depart, especially for a sea voyage or military assignment. 

  • To get rid of, expel, or discard. 

  • To send, especially by means of a transport vehicle. 

split up

verb
  • Cease to be together, break apart from the group. 

  • separate, disassociate, cause to come apart. 

adj
  • Divided or separated. 

How often have the words ship out and split up occurred in a corpus of books? (source: Google Ngram Viewer )