The word "栏栅" is formed by combining the characters "栏" and "栅", both of which independently refer to fences or barriers; "栏" denotes a railing or enclosure, while "栅" specifies a fence made of stakes or bars. Together, they create a compound word that emphasizes the concept of a physical barrier, typically constructed from interconnected rails or palisades, with the dual characters reinforcing a single, concrete meaning.