Gestures, signs, signals, and even words that help people understand the world around them by expressing understandable meanings within the society are called symbols.
A gesture is a form of nonverbal communication in which physical signals is used to express or convey information. Gestures include movements of the hands, face, and body, and can be used to communicate emotions, intentions, or thoughts.
People use gestures to supplement or replace verbal communication, and can do so in any communication context, including face-to-face, online, and in public settings. Gestures can be used to expressing a wide range of messages, including requests, commands, warnings, invitations, and warnings.
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