Englishfor English speakers
practical
Adjective
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If something is practical, it works and is not more difficult that it should be. It makes sense and is good for real life.
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If something is practical, it comes from actually doing something, not from theory.
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If you are practical, you do practical things and think in a practical way.
instruction
Noun
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An instruction is a command or a step that helps you achieve a goal.
Before he died, he gave the hospital instructions about how to deal with his body.
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The instructions that come with a new machine, computer, or product tell you how to use the product.
I couldn't figure out how to set the temperature in the fridge, so I read the instructions.