A "handshake" is a common greeting where two people grasp each other's right hand and shake it up and down. This gesture is often used to show friendliness, agreement, or to seal a deal. Handshakes can vary in style and strength, but they usually convey respect and goodwill between individuals. In many cultures, a handshake is an important part of social interactions, especially in business settings. It can signify the start of a new relationship or partnership, making it a key element in events like business meetings or networking events. A firm handshake is often seen as a sign of confidence and professionalism.