The word 再次 is formed by combining two independent characters, each contributing its inherent meaning to create a new, reinforced concept. The first character, 再, means "again" or "once more", denoting repetition. The second, 次, means "order", "sequence", or "next in line". When placed together, they construct a meaning where the idea of "a next time" is explicitly framed as a repetition, thus yielding the compound sense of "once again" or "a second time".