What is the difference between the component force of a force along two axes and the projection of the force on the axis? Do they have to be the same size?

What is the difference between the component force of a force along two axes and the projection of the force on the axis? Do they have to be the same size?

The component of force on two axes is vector, and the projection of force on the axis is scalar, which must be the same in rectangular coordinate system. The problem is that on two axes, that is rectangular coordinate system