Flint and lathe: what they have in common

1. Step 1. Flint — is material for — Bow and arrow. Arrowheads were knapped from flint.
2. Step 2. Bow and arrow — has part — Rope. The bowstring is a cord of sinew or fibre.
3. Step 3. Rope — is part of — Lathe. The bowstring wraps around the workpiece and turns it.

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