Name the Parts

Wheels
How do we classify Linear & Rotary Transmission?
Transmission of motion
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Hammer
A Lever?
The bar, of a see-saw, a bicycle brake lever, hand crank etc.
Pulley
How do we classify speed reduction e.g a Brake?
Motion Control

Screw
A Pulley System?
A well, blinds, cranes etc.

Gears
How do we classify the motion of a Wheel?
Rotary-Linear, Transformation of Motion

Screwdriver
Gears
Bicycles, Clocks, Cars, Lifts etc.

Brake lever
What are the two forms of Motion Control?
Direction Control & Speed Reduction

Saw
Belt and Chain drives?
Bicycles, Motorbikes, Lifts etc.

Block & Tackle
How do we classify a Spring?
Energy Accumulation
Drill
Nut & Bolt mechanism?
Screw-top bottles, scissorjacks to hold up cars, water taps etc.