The word 移动 is formed by combining two independent characters, each with its own meaning, to create a new, more specific concept. The first character, 移 (yí), carries the core idea of "shifting" or "changing position". The second character, 动 (dòng), fundamentally means "to move" or "to act". When joined, their meanings compound and reinforce one another, producing the combined sense of "to move from one place to another" or "to be mobile", effectively picturing the action of something shifting its location.