Englishfor English speakers
instance
Noun
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An instance of something is a time or situation when it happens.
In this particular instance, the computer was the problem, not the user.
There have been many instances of cheating that were not caught.
description
Noun
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A description is a phrase or sentence that tells you what something is, or what something is like. A dictionary has descriptions of words, and a biography has descriptions of events in a person's life.
After coming back from Costa Rica, he gave me a long description of the swimming and sight-seeing he did there.