Effective - Efficient. They mean different things in English

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These WORDS cost you MONEY ❌

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Kind words cost nothing, but they mean everything! 💖 #selfimprovement #motivation #success

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No! Didn’t you see the three words “cost-effective” in such big words on the keyboard?

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The key to climate livability is cost-effective energy. In other words, oil conquers climate.

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Cost meaning | Cost in a Sentence | Most common words in English #shorts

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What is Cost Benefit and Cost Effectiveness Analysis? by Prof. Katherine Payne