Nods of the head are a form of nonverbal communication that is used to express agreement, understanding, or acknowledgement. They can also be used to show respect or to indicate that someone is listening. Nods of the head are often used in conversations as a way to show agreement or understanding without having to say anything. They can also be used to indicate that someone is paying attention and is interested in what is being said. Nods of the head are a universal form of communication that is understood by people from all cultures.