What is the difference between chrome plated and stainless steel?

Chrome plated is using electric plating method to have a layer of chrome plated on top of the metal, (usually iron or steel. ) because of the nature of the chrome it will prevent rusting of the surface of the metal.
Stainless steel is an alloy containing chrome and aluminum and many other traceable amount of metals, different grade of stainless has different ratio of contains and give different characteristics to the steel.