The Chinese word 震动 (zhèndòng) is a compound word formed by combining two independent, semantically related characters: 震 (zhèn), which primarily means "to quake" or "to shake" (as in an earthquake 地震), and 动 (dòng), which means "to move" or "movement". In this verb-noun or coordinative compound structure, both elements contribute to the overall meaning, with 震 describing the type or manner of shaking (often intense or from a source) and 动 denoting the action itself, together creating the comprehensive sense of "to vibrate", "to shake violently", or "to cause a sensation". This formation is typical in Mandarin, where two synonyms or near-synonyms are combined to reinforce and specify a concept.