対策【たいさく】
measure, step, countermeasure, counterplan, countermove, strategy, preparation (e.g. for a test)
政策【せいさく】
political measures, policy
策【さく】
plan, policy, means, measure, stratagem, scheme, fifth principle of the Eight Principles of Yong, right upward flick
策略【さくりゃく】
scheme, tactic, stratagem, trick