Definition of a facial expression and example?

Facial expression refers to the movements or changes in the face that convey various emotions, thoughts, or intentions. It involves the coordinated action of muscles beneath the skin, particularly in the areas around the eyes, eyebrows, mouth, and cheeks. Facial expressions are an essential part of nonverbal communication and play a crucial role in social interactions.

Example: When a person smiles, the muscles around the mouth and cheeks contract, pulling the corners of the mouth upward and creating a curved shape. This facial expression universally signifies happiness, joy, or amusement. Other common facial expressions include frowning (expressing sadness or disapproval), raising eyebrows (showing surprise or curiosity), and pursing lips (indicating disapproval or thoughtfulness).