This aim of article is to reveal the boundary between Murye and Bulson. Murye is provided the words and behaviors which threat individual·social face and relations, and Korean interactants perform Murye innocently or maliciously. This (un)intentional face threats can merely be judged through the situational·relational context of conversational interactants. In other words, korean interactants perceive Murye intentionally through the propositional attitudes(formal mechanisms), and in this sense intentional Murye is perceived as Bulson, unfixed categories. Bulson is based on the words and actions of Murye, and realized as a result of the addressee`s subjective judgement and emotional effects through the exchange of continuous utterances. Mechanisms differentiate Bulson from Murye present as follow : cling to previous negative situations and emotions, acting against expected values, not demonstrating social roles, violating the limit of emotions, not respecting or disregarding status.
