Household appliance and internal combustion engine: what they have in common

1. Step 1. Household appliance — includes — Vacuum cleaner. A household appliance.
2. Step 2. Vacuum cleaner — has part — Impeller. An impeller creates the suction.
3. Step 3. Impeller — is part of — Water-jet propulsion. An impeller.
4. Step 4. Water-jet propulsion — is part of — Jet ski. A water jet.
5. Step 5. Jet ski — has part — Internal combustion engine. An engine.

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