Final answer:
Gestures are nonverbal symbols used to communicate without words, and they can vary in meaning depending on the situation and the person. Hand movements, facial expressions, and body language are examples of gestures.
Step-by-step explanation:
Gestures are nonverbal symbols that people use to communicate without words. They are learned through one's culture and can vary in meaning depending on the situation and the person. According to researchers Hobaiter and Byrne, gestures can include hand movements, facial expressions, and body language. For example, a wave of the hand can mean "hello," "goodbye," or "no thank you," depending on how it's done and for whom.