Direct Front Light 
Direct side light 
Direct backlight 
Directional diffused front light 
Directional diffused side light 
Directional diffused backlight
The direct lighting has the direct ray of the sun hitting the sit the light is coming from. It creates contrast and a mood. Directional diffused light however doesn’t have this effect. The light is spread out eventually in the shade. The only way to tell the difference is direction the highlights are coming from. Front light is mostly light from the front of the subject. This gives a warm feeling. Side light has a high contrast between light and dark. And back light has only a little amount of light on the subject.
Good work. There is a really clear difference between direct light and directional diffused light in your photos.