hassle vs split up

hassle

adj
  • hassling; hasslesome 

verb
  • To engage in a mock dogfight. 

  • To pick a fight or start an argument with. 

  • To trouble, to bother, to annoy. 

noun
  • Trouble, bother, unwanted annoyances or problems. 

  • A fight or argument. 

  • An action which is not worth the difficulty involved. 

split up

adj
  • Divided or separated. 

verb
  • separate, disassociate, cause to come apart. 

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

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