Englishfor English speakers
of
Preposition
—
Made using.
It is a house of cards.
area
Noun
—
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.
—
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.
—
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.