Appendix · Guide & Notice

OnGgeut represents Taeguk, symbolizing the perfect
    harmony of the universe and the balance of darkness and
    light (BalkEo, Yin and Yang). The term combines on (all,
    complete) and geut (extreme), meaning "the end and the
    beginning of all things."
    SeOnGgeut represents Samtaeguk, the threefold complete
    harmony, symbolizing the unity of Heaven, Earth, and
    Human in perfect balance.

    5. Naming for initial consonants: ㄱ (Geu-iG), ㄴ (Neu-iN)

    The initial sounds of Jeongeum, that are consonants, are
    named by adding ㅡ (eu) to the initial consonant. The final
    sounds are named by adding i and the appropriate final
    consonant sound. For example, the initial sound of ㄱ is
    called Geu, and its final sound is called iK. Combining both
    the initial and final sound names, the complete name for ㄱ
    becomes Geu-iG. Therefore, ㄱ can be referred to as either
    Geu or Geu-iG.
    For ㆅ, since it is not used as a final consonant in Unicode
    composition, its final sound name is represented using the
    similar sound ㅎ (Heu-iH), and it is named Ih. In Jeongeum,
    although ㅇ is written as Eu-i (으이), its final sound is
    actually silent, so it should be pronounced as Eui


    Appendix - Guide notice                                       271