Most martial arts I've looked at, including my primary art (Taekwondo), take each kicking technique as its own name. For example, a roundhouse kick is a kick across your body, a front kick is straight in front, a side kick straight out, a back kick straight back. Now you might do a low roundhouse or high roundhouse for different targets, but they all have a name based on the type of motion you're doing. But in MMA, it seems all the kicks are named after where you're hitting. A "leg kick" is any kick aimed at the quads, a "calf kick" is aimed at the calf (compared with a "calf kick" in a TMA which is a hook kick where you strike with the calf). An Oblique Kick is any kick aimed at the oblique ligament (as opposed to Hapkido, where it's a straight kick across your body). There's "body kick" and "head kick" which seems to be just about any kick going for the body or head. Why is it that MMA classifies kicks in this way? Is it just for simplicity of announcing to the layman?