The Chinese word **铁轨 (tiěguǐ)**, meaning "railway track," is a logical compound formed by combining two characters: **铁 (tiě)**, meaning "iron" or "metal," and **轨 (guǐ)**, meaning "track," "rut," or "course." It is a straightforward **modifier-head** compound common in Mandarin, where the first character specifies the material (**iron/metal**) and the second character denotes the object's core function or category (**track**). Thus, the term literally translates to "iron track," directly and transparently describing the physical object.