fulfill vs obey

fulfill

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

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

  • To package, distribute, or ship goods. 

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

obey

verb
  • To do as ordered by (a person, institution etc), to act according to the bidding of. 

  • To do as one is told. 

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