The pronoun ‘geunom’ basically has the function of lowering the status of a man. In the Southwestern dialect, however, it is also used to refer objects, the resulting consequence of which is the overlapping of function with the already existing demonstrative pronoun ‘geugeot.’ Also in the Southwestern dialect, the bound noun ‘nom’ can be used to refer objects and thus the overlapping of function occurs with the preexisting ‘geut’ which is also used to refer objects. Which brings us to the question of how the two expressions-‘nom’ and ‘geot,’ ‘geunom’ and ‘geugeot’-are differentiated in their usage in the Southwestern dialect where both expressions can be used for the same function. This paper starts with this question. The bound noun ‘nom’ occurs in relative constructions, but in the Southern dialects it can even occur in some of the complement constructions, which marks the difference with other dialects in which ‘nom’ does not occur in complement constructions. Also ‘nom’ has the restriction of not being able to occur in such structures that are used to indicate possessions, such as ‘human noun + possessive particle.’ On the other hand, ‘nom’ is used more specifically than ‘geot’ and is a situation-dependent expression. Likewise, because ‘geunom’ can be used as a more specific and subjective pronoun than ‘geugeot,’ it can be used to indicate more concrete situation. On this account, ‘geugeot’ is used instead of ‘geunom’ in relatively objective situations such as when presenting a new name for something, when objective predicate is used, or when referring to an object already mentioned by the other speaker. Also, in situations that tend to be conservative to changes, such as the idiomatic construction, the more traditional expression of ‘geot’ or ‘geugeot’ is used instead of ‘nom’ or ‘geunom’ which has undergone change of meaning.