The word "如出一辙" is formed by combining four characters: 如 (meaning "like" or "as if"), 出 (meaning "from" or "to come out"), 一 (meaning "one"), and 辙 (meaning "wheel track" or "rut"). Literally, it translates to "as if from one wheel track", where 如 sets up a comparison, 出 denotes origin, 一 emphasizes uniformity, and 辙 provides the tangible image of a path; together, they create a fixed idiom that uses this concrete imagery to convey the abstract notion of two things being exactly alike.