The word 驱逐 is formed by combining two characters, each contributing a similar meaning to create a single, more forceful concept. The first character, 驱 (qū), carries the core idea of driving, as in driving horses or vehicles forward, implying propulsion or expulsion. The second character, 逐 (zhú), means to pursue, chase, or oust. When placed together, they reinforce and intensify each other, picturing the action of not just pushing out, but actively chasing something or someone away. Thus, the compound 驱逐 conveys a unified meaning of "to expel" or "to banish", with a strong sense of driven, purposeful ejection.