Final answer:
Facial expressions, body position, and tone of voice fall under non-verbal communication, which includes the use of body language and vocal qualities to convey messages or emotions, and is often influenced by cultural norms.
Step-by-step explanation:
Facial expression, body position, and tone of voice are all examples of non-verbal communication. Unlike verbal communication, which relies on words to convey a message, non-verbal communication involves the transmission of messages through body language, facial expressions, and vocal qualities like tone. This form of communication is symbolic and often culturally learned. For instance, a smile typically signifies happiness, while a furrowed brow may indicate confusion or concern. Body language is a critical aspect of interpersonal communication since it can greatly influence the interpretation of the message or the emotion behind the words.
Kinesics is the term used to describe body movements and gestures which can include facial expressions such as smiling or frowning. Although much of this occurs subconsciously, it can offer valuable cues that either align with or contradict what's being said verbally. People may also use paralanguage, incorporating cultural elements such as tone, language, and accent. Consequently, understanding non-verbal cues is essential for effective communication across various contexts.