Clay tandoor jar and cannon: what they have in common

1. Step 1. Clay tandoor jar — is part of — Tandoor. A clay bulb heated red-hot from inside.
2. Step 2. Tandoor — is made of — Clay. Clay.
3. Step 3. Clay — is material for — Grenade. Medieval grenades were ceramic vessels.
4. Step 4. Grenade — uses — Gunpowder. An explosive.
5. Step 5. Gunpowder — is used in — Cannon. A gunpowder charge.

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