fulfill vs refuse

fulfill

verb
  • To obey, follow, comply with (a rule, requirement etc.). 

  • To emotionally or artistically satisfy; to develop one's gifts to the fullest. 

  • To package, distribute, or ship goods. 

  • To satisfy, carry out, bring to completion (an obligation, a requirement, etc.). 

refuse

verb
  • To decline a request or demand, forbear; to withhold permission. 

  • To melt again. 

  • To decline (a request or demand). 

  • To throw back, or cause to keep back (as the centre, a wing, or a flank), out of the regular alignment when troops are about to engage the enemy. 

noun
  • Collectively, items or material that have been discarded; rubbish, garbage. 

adj
  • Discarded, rejected. 

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