Englishfor English speakers
depression
Noun
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A depression is when a person's feelings are very sad and unhappy.
Van Gogh suffered from depression for a long time before he killed himself.
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A depression is a low point on a surface.
There was a small depression in the ground where the rock had been.
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A depression is when the economy slows down by a lot.
The business community is worried that the oil problems could lead to a depression.
wave
Noun
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A wave is the motion of water up and down.
wave
Verb
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To move from side to side again and again.
The flag waved in the wind.