This paper aims to clarify the concept of clipped words and blends in korean by investigating the morphological characteristics some problematic examples. Clipped word is formed by clipping the part of a word. It have the same meaning with the original word. There is a diversity of opinions about what is the morphological identity of abbreviations that is formed from the first syllables extracted the constituents of a word. This paper considers a word have the clipping process as clipped word. Initialism is not a opposing concept with clipped word in korean but only a type of clipped word. Blends are words formed by combination of arbitrary of existing two or more words and are characterized by comprising both clipping and compounding. The typical blends is ones that two or more existing words have paradigmatic relations, and that all of two or more existing words is clipped, and that have AD pattern in morphological structure. The most problematic example in the study on blends is abbreviations that the componential words have syntagmatic relations, and that the clipped parts is the first syllables of words, and that AC pattern in morphological structure. This paper consider abbreviations of this AC pattern as blends on the evidence of existence of the syntagmatic blends of AD pattern. So initialism is considered as needless concept in study on blends in korean. This paper demonstrated that the meaningful sameness between original forms and blend is not criteria which distinguish whether any abbreviations is blends or not. So componential words which can form syntactic constructions of parallel connection become blends by undergoing both clipping and compounding.