Definition:Area

Definition
Area is the measure of the extent of a surface.

It has two dimensions and is specified in units of length squared.

Hence the term square as a general vague term for a quantity in two dimensions.

Dimension
Area is a dimension of measurement of physics.

The dimension of area is $L^2$: length squared.

Units

 * The SI unit of area is the square metre $\mathrm m^2$.
 * The CGS unit of area is the square centimetre $\mathrm {cm}^2$.

Thus:
 * $1 \ \mathrm m^2 = 10^4 \ \mathrm {cm}^2$