Saw blade and jacquard loom: what they have in common

1. Step 1. Saw blade — is part of — Saw. A toothed steel blade.
2. Step 2. Saw — has part — Handle. A handle.
3. Step 3. Handle — is part of — Toothbrush. A plastic handle.
4. Step 4. Toothbrush — is made of — Plant fibre. The bristles were hog hair, later nylon.
5. Step 5. Plant fibre — is used in — Loom. Cloth is woven from threads spun from fibres.
6. Step 6. Loom — includes — Jacquard loom. A loom with punched cards.

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