crucifixion vs martyrdom

crucifixion

noun
  • An ordeal, terrible, especially malicious treatment imposed upon someone. 

  • An execution by being nailed or tied to an upright cross and left to hang there until dead. 

  • The death on the Cross of Christ. 

  • The military punishment of being tied to a fixed object, often with the limbs in a stretched position. 

martyrdom

noun
  • Extreme suffering, affliction; torment; torture, especially without reason. 

  • The condition of a martyr; the death of a martyr; the suffering of death on account of adherence to the Christian faith, or to any cause. 

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