Stuffing and chisel: what they have in common

1. Step 1. Stuffing — is part of — Teddy bear. Synthetic wadding or sawdust.
2. Step 2. Teddy bear — is made of — Wool. Plush.
3. Step 3. Wool — is material for — Trousers. The oldest trousers (Yanghai) were sewn from wool.
4. Step 4. Trousers — has part — Zip. A fastener.
5. Step 5. Zip — has part — Wedge. The slider works like a wedge, bringing the teeth together and pushing them apart.
6. Step 6. Wedge — is used in — Chisel. The cutting edge is a wedge.

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