Security hologram and rope: what they have in common

1. Step 1. Security hologram — is part of — Paper money. Protecting banknotes.
2. Step 2. Paper money — is used in — Wallet. It holds money.
3. Step 3. Wallet — has part — Zip. A zipped coin compartment.
4. Step 4. Zip — has part — Wedge. The slider works like a wedge, bringing the teeth together and pushing them apart.
5. Step 5. Wedge — is used in — Harpoon. A barbed point enters like a wedge and does not come back out.
6. Step 6. Harpoon — has part — Rope. A line connects the head to the hunter.

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