What is considered synonymous with "affect" in emotional terms?

In emotional terminology, "affect" refers to the observable expression of emotion, which is closely tied to the broader concept of "emotion." While "feeling" encompasses the subjective experience that individuals have internally and is often less visible, "affect" pertains to how those emotions are expressed through facial expressions, tone of voice, and body language. Therefore, "emotion" is the term that is most synonymous with "affect" because it captures both the internal experience and the potential outward expressions that correspond with affective states.

Additionally, "mood" typically describes a more sustained emotional state that may not be as intense or visibly expressed as affect, while "sensation" pertains more to the physical perception derived from sensory input, which is distinct from emotional expressions. Thus, within the context of this question, "emotion" effectively encompasses the meaning of "affect" and clarifies its use in emotional discussions.