Englishfor English speakers
observation
Noun
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Observation is the act of carefully seeing things that happen.
To learn, you must be good at observation.
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An observation is something someone saw, heard etc.
In science, we record our observations so we can think about them later.
balloon
Noun
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A balloon is a light round ball filled with air that floats; often a child's toy.
My balloon floated away into the sky.
balloon
Verb
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If something balloons that means it grows very fast.
The price of oil has ballooned.