This paper explores so-called blends in Korean neologisms. This paper investigates three aspects of types of blends: the position of formation, the way of formation, and semantic relationships. This paper divides blends into four types based on the first aspect, into three types based on the second aspect, and into three types based on the third aspect. In addition, we propose the formation procedure of the word of ‘X+phalachi’ type in section 4. Concerning with the definition and scope of blends, this paper proposes ‘Revised Basic Conditions for Blends’ considering their morphological, semantic properties, and ‘Basic Conditions of the Source Words’ in section 5. Finally we offer a new procedure for determining blends separate from the definition of a blend, and the conditions for selecting an optimal blend candidate.