The word **颠簸** (diānbǒ), meaning "to bump or jolt" as in rough travel, is a **reduplicative compound** formed by combining two characters with similar meanings and shared phonetic elements. Both characters contain the **"页" (yè) radical**, which relates to the head or body, anchoring the meaning in physical sensation. **颠** (diān) carries connotations of a peak, top, or to fall, suggesting an up-and-down motion, while **簸** (bǒ) specifically means to toss or winnow, often with a side-to-side or shaking action. Their combination creates a vivid, disyllabic word that phonetically and semantically mimics the repetitive, unstable, and bumpy experience it describes.