Englishfor English speakers
tool
Noun
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A tool is an object that you use to do a specific job, such as a hammer.
I used to fix my own car, but I sold all my tools.
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A tool is a person being used by another person or organization.
He is such a tool. He should think for himself, instead of doing everything they tell him to do.
cluster
Noun
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A cluster is anything that is more than one thing put together.
In the market, you can find a cluster of bananas.