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Effectiveness and efficiency are not synonymous. Efficiency is defined as the ability to complete a task with the least amount of wasted time, money, and effort, as well as performance competency. The degree to which something is successful in producing a desired result is defined as effectiveness; success. The difference is that when something is effective, it yields a result even if it necessitates the expenditure of some unnecessary resources. When something is efficient, it produces a result in a quick or simple manner with the least amount of material, time, effort, or energy possible. The following sentences demonstrate how the two words are used together.

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Images | English