Englishfor English speakers
demonstration
Noun
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A demonstration of something is the act of showing that it is true or that it exists.
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A demonstration of something is the act of showing how to do it or use it.
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A demonstration is a gathering of people to protest something publicly.
criterion
Noun
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A criterion is a principle that you use to judge something or decide about something.
The only criterion used for measuring success was school grades.