Bicycle|noun|A vehicle composed of two wheels held in a frame one behind the other, propelled by pedals and steered with handlebars attached to the front wheel
Pedals|noun|A pair of foot-operated levers used for powering a bicycle or other vehicle propelled by the legs
Brakes|noun|A device for slowing or stopping the motion of a vehicle, typically by applying pressure to the wheels
Transport|noun|The action of carrying people or goods from one place to another
Invention|noun|A thing that has been made or designed by someone, a creative process