fidelity vs obedience

fidelity

noun
  • Faithfulness to one's duties. 

  • Accuracy, or exact correspondence to some given quality or fact. 

  • Loyalty to one's spouse or partner, including abstention from cheating or extramarital affairs. 

  • The degree to which a system accurately reproduces an input. 

obedience

noun
  • The quality of being obedient. 

  • The collective body of persons subject to any particular authority. 

  • A written instruction from the superior of an order to those under him. 

  • Any official position under an abbot's jurisdiction. 

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