Loom reed comb and newcomen engine: what they have in common

1. Step 1. Loom reed comb — is part of — Loom. It beats the weft into the cloth.
2. Step 2. Loom — evolved into — Power loom. A mechanized loom.
3. Step 3. Power loom — has part — Watt steam engine. Driven by a steam engine.
4. Step 4. Watt steam engine — evolved from — Newcomen engine. Watt improved Newcomen’s engine.

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