Shows of pleasure can be expressed in many ways, such as through a grin or a smile. A grin is a facial expression that typically shows happiness or amusement, and is usually characterized by a slight curving of the lips. A smile is a more intense expression of pleasure, and is usually characterized by a broad curving of the lips and the formation of wrinkles around the eyes. Both expressions are often used to show joy, contentment, or amusement.