The word "雕梁画栋" is formed by combining two parallel phrases: "雕梁" meaning "carved beams", where "雕" (carve) modifies "梁" (beam), and "画栋" meaning "painted pillars", where "画" (paint) modifies "栋" (pillar). This structure creates a compound that descriptively depicts ornate architectural elements through direct modification of nouns by verbs, resulting in a vivid image of decorated buildings.