Hand gestures are movements made with the hands to convey messages or emotions without using words. They can enhance communication by emphasizing points or expressing feelings, such as happiness, anger, or surprise. Different cultures may have unique gestures that carry specific meanings, making it important to understand the context in which they are used. Common hand gestures include waving to greet someone, giving a thumbs up to show approval, or pointing to indicate direction. Some gestures, like the peace sign or OK sign, are widely recognized, while others may be more localized. Understanding these gestures can improve interpersonal communication and foster better connections.