devotion vs infidelity

devotion

noun
  • Religious veneration, zeal, or piety. 

  • The act or state of devoting or being devoted. 

  • Feeling of strong or fervent affection; dedication 

  • A prayer (often found in the plural) 

infidelity

noun
  • Lack of religious belief. 

  • Unfaithfulness in some other moral obligation. 

  • Unfaithfulness in a marriage or an intimate relationship: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse. 

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