Been thinking about this some more... There's a style of fighting where fighters kick and punch each other full power in the body but don't punch each other in the face. They wear traditional looking uniforms and it happens on a matted area. It was founded by a Korean. Now...is that Knockdown karate or WTF Taekwondo? Because from a simple written description, mentioning some superficial similarities, maybe bringing in some static pictures that don't fully convey movement or a bout as a whole or looking at a sculpture or two, but without actually seeing the two styles in action live they could be mistaken for the same thing. When in actual fact they are stylistically very different and the actual bouts and "style" don't look similar at all.