Verb: to put a plan, idea, or rule into action. Noun: a tool or instrument used for a particular task.
From Late Latin 'implementum' meaning 'filling up, fulfillment', from 'implere' (to fill up). It shifted from the idea of completion to the things or actions that make something happen.
To implement a plan is to ‘fill it up’ with real actions so it’s no longer just words. The noun sense (a tool) and the verb sense (to carry out) both share the idea of giving something the power to actually work.
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