Facial expressions are a form of nonverbal communication that convey emotional states and social information. They are involuntary reactions closely tied to emotion, though some expressions can be consciously controlled. The facial expressions for basic emotions like fear, anger, sadness, and happiness are universally recognized across cultures. Important cues can be gleaned from eye movements and expressions, like whether someone makes direct eye contact or their pupils are dilated. Facial displays provide insights into feelings and mental states beyond just words.