martyrdom

nouns

death that is imposed because of the person's adherence of a religious faith or cause
martyrdom
is derived from
martyr
is a type of (narrower)
the event of dying or departure from life
"her death came as a terrible shock"; "upon your decease the capital will pass to your grandchildren"
death, decease, expiry
any experience that causes intense suffering
calvary, martyrdom
is derived from
martyr