1. Malleability is the property of being physically malleable; the property of something that can be worked, hammered or shaped without breaking.
2. Ductility is the malleability of something that can be drawn into threads, wires or hammered into thin sheets.
3. Corrosion is the state of deterioration in metals caued by oxidation or chemical action.

Hope this helps:)
Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment.
Malleability is the ability to be bent or molded into different forms.
Ductility is the ability to be drawn out into a thin wire form