Final answer:
Facial expressions, mood, and affect are part of body language, which is a form of nonverbal communication. Facial expressions of emotions are universal and can be recognized across cultures.
Step-by-step explanation:
Facial expressions, mood, and affect are all part of the broader concept of body language, which is a form of nonverbal communication that conveys information about our emotional states. Research suggests that facial expressions of emotions are universal and can be recognized regardless of cultural background. Additionally, our body language and tone of voice also play a role in communicating our emotional states.