Pain is fundamentally just unpleasant—sometimes extremely unpleasant—sensation or feeling. Suffering, on the other hand, is something that we’re doing with our pain. Compare: Pain My husband just left me, and I’m hurting terribly. My heart is broken. Suffering My husband just left me, and I’m hurting terribly. My life is over. I’ll never find love again. My mother’s right—I should never have been born.