Word Network: 合理化する

Efficiency refers to the ability to achieve a goal or perform a task with the least waste of time, effort, or resources. In a business context, it specifically describes the ratio of output to input, focusing on productivity and streamlining processes.

Kaikaku refers to the fundamental and systemic improvement or renewal of an existing institution, organization, or policy. It implies a large-scale change intended to fix deep-seated problems rather than minor incremental adjustments.

The act of making a situation, system, or quality better than it was before. It is often used to describe positive changes in habits, business processes, or social conditions.

Refers to something that is wasteful, useless, or futile. It describes actions, efforts, or resources that do not produce a useful result or are unnecessary.