What is the differnce between chitin and cuticle?

Chitin is the main constituent of the protective covering of arthropod skeleton and cell wall of some fungi. It is made up of nitrogen and is a derivative of glucose.
 Where as cuticle is the outermost hard exoskeleton found in arthropods. Cuticle in arthropods and fungi is made up of chitin.  It provides protection to the organism. In plants, cuticle is a waxy layer produced by the epidermal cells of leaves. It helps to reduce the loss of water from the plant body.