The Japanese noun '策 (さく)' means 'plan' or 'scheme'. It refers to a carefully devised strategy or course of action designed to achieve a specific goal. This word is often used in formal or strategic contexts, such as business, politics, or problem-solving. For example: We need a new plan「新しい策が必要だ」(あたらしいさくがひつようだ). His plan was successful「彼の策は成功した」(かれのさくはせいこうした). The word can also imply a level of cunning or cleverness in the plan, depending on the context.