Add fuel to the fire and Rub salt in the wounds

Rub salt in the wounds and add fuel to the fire are semantically related. In some cases you can use "Rub salt in the wounds" instead a verb phrase "Add fuel to the fire".

Add fuel to the fire and rub salt in the wounds are semantically related. You can use "Add fuel to the fire" instead a verb phrase "Rub salt in the wounds".