accelerate vs set back

accelerate

verb
  • To hasten, as the occurrence of an event. 

  • To become faster; to begin to move more quickly. 

  • To enable a student to finish a course of study in less than normal time. 

  • Grow; increase. 

  • To quicken the natural or ordinary progression or process of. 

  • To cause to move faster; to quicken the motion of; to add to the speed of. 

  • To cause a change of velocity. 

adj
  • Accelerated; quickened; hastened; hurried. 

set back

verb
  • To delay or obstruct. 

  • To remove from or allow distance. 

  • To install or position behind a boundary or surface, or in a recess. 

  • To cost money. 

  • To reverse, go backwards. 

How often have the words accelerate and set back occurred in a corpus of books? (source: Google Ngram Viewer )