Englishfor English speakers
abrupt
Adjective
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An abrupt action is one that is sudden, or not expected.
There was an abrupt change in the weather, and it started raining before we could get home.
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An abrupt landscape is one with sudden steep changes.
We came to a halt because we could not pass the abrupt cliffs.
peak
Noun
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A peak is a point at the top of an object.
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A peak is the highest amount reached.
The stock market reached a peak in September 1929.
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A peak is the top of a mountain.
peak
Verb
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To peak is to reach the highest degree or maximum of something.