Stronger than anguish:
* Agony: Extreme physical or mental suffering.
* Torture: Severe pain or suffering, often inflicted as punishment.
* Despair: Complete loss of hope or courage.
* Distress: Great sorrow or suffering.
Similar to anguish:
* Pains: Physical or emotional suffering.
* Grief: Deep sorrow, especially for a loss.
* Woe: Great sorrow or distress.
* Misery: Great unhappiness or suffering.
* Heartbreak: Intense emotional pain, often caused by loss or disappointment.
* Angst: A feeling of anxiety or dread.
Less intense than anguish:
* Sorrow: Sadness.
* Distress: A feeling of unease or anxiety.
* Concern: Worry or anxiety.
The best word to use will depend on the specific context and the level of intensity you want to express.