Papyrus and zip: what they have in common

1. Step 1. Papyrus — evolved into — Paper. Paper displaced papyrus and parchment as a cheap writing material.
2. Step 2. Paper — is material for — Paper money. Paper.
3. Step 3. Paper money — is used in — Wallet. It holds money.
4. Step 4. Wallet — has part — Zip. A zipped coin compartment.

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