devotion vs fidelity

devotion

noun
  • The act or state of devoting or being devoted. 

  • Feeling of strong or fervent affection; dedication 

  • Religious veneration, zeal, or piety. 

  • A prayer (often found in the plural) 

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. 

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