+Facial expressions are subtle, dynamic movements of the face's [Muscles](/wiki/muscles). They are a universal language, openly conveying deep [Emotion](/wiki/emotion) and intent through [Nonverbal Communication](/wiki/nonverbal_communication).
+## See also
+- [Body Language](/wiki/body_language)
+- [Social Interaction](/wiki/social_interaction)
+- [Human Behavior](/wiki/human_behavior)
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