breach of trust vs fidelity

breach of trust

noun
  • An act, omission or concealment, by which a person who has a fiduciary duty to act in the interest of another instead uses their position for their own benefit. 

fidelity

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

  • Faithfulness to one's duties. 

  • 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 breach of trust and fidelity occurred in a corpus of books? (source: Google Ngram Viewer )