Hand signals are non-verbal gestures made with the hands to communicate specific messages or instructions. They are often used in situations where verbal communication is not possible or practical, such as in noisy environments or during sports. Common hand signals include waving to greet someone, pointing to indicate direction, or using specific gestures in activities like traffic control or scuba diving. Different contexts may have unique hand signals that convey particular meanings. For example, in American Sign Language (ASL), hand signals represent letters and words, allowing for effective communication among the deaf and hard-of-hearing community. Understanding these signals can enhance communication and ensure clarity in various situations.