Englishfor English speakers
area
Noun
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An area is a piece of land or space.
This is the business area of town.
We have chosen a large forest area for the new park.
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An area of study is a special subject, such as mathematics, grammar, music, or biology.
Economics is quite interesting, but my area is more related to politics.
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The area of a surface, is the size of the surface.
The length is 10 cm and the width is 5 cm, so the area is 50 mathcm^2/math.
alteration
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noun
(= change, modification)
an event that occurs when something passes from one state or phase to another
the change was intended to increase sales
this storm is certainly a change for the worse
the neighborhood had undergone few modifications since his last visit years ago
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noun
the act of making something different (as e.g. the size of a garment)
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noun
(= revision)
the act of revising or altering (involving reconsideration and modification)
it would require a drastic revision of his opinion