They are two different shapes.

They are two different sizes.

They are two different colors.

The number of sides each of the shapes have.

The color of the shapes.

One shape is two-dimensional and the other shape is three-dimensional.

The number of sides.

The names of the shapes.

The size of the shapes.

One shape is round and one shape is made up of straight lines.

One shape is two-dimensional and the other shape is three-dimensional.

They are different colors.

They are both three-dimensional.

They are both two-dimensional.

They are the same color.

They have the same number of sides.

They are the same color.

They are the same size.

The number of sides each of the shapes have.

The height of the shapes.

One shape is two-dimensional and the other shape is three-dimensional

The number of sides they both have.

The color of the shapes.

The size of the shapes.

One of the shapes is two-dimensional and one of the shapes is three-dimensional.

Their color is different.

Nothing is different, they are the same shape.

The number of sides each shapes have.

The color of each shape.

The size of each shape.