Cube : A cube is a three-dimensional shape with 6 faces that are all squares. A cube has 8 corners and 12 edges.

Cubic meter : A cubic meter or $m^3$ is a unit to measure volume. A cubic meter is the volume of a cube with edge length 1 meter.

Edge : An edge of a shape is a line segment between two corners of that shape.

Length : Length is the attribute of a one-dimensional shape that can be measured with a measuring tape.

Volume : Volume refers to the size of a three-dimensional objects measured by how many unit cubes it would take to fill the shape.