expel vs spit out

expel

verb
  • To eject or erupt. 

  • To remove from membership. 

  • To deport. 

spit out

verb
  • To eject. 

  • To say reluctantly (see also spit it out). 

  • To rap; to repeat verses passionately or intensely. 

  • To say scornfully. 

  • Used other than figuratively or idiomatically: see spit, out. 

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