Overhead Attacks (often called "Overheads") are attacks that hit the opponent if they're blocking low. Usually these are airborne attacks, but they can sometimes be standing attacks.

Mid Attacks (or "mids") are attacks that can be blocked crouching, standing, or airborne. They're usually standing attacks. They're not very likely to hit a careful opponent. But their speed, range, and ease of use make them occasionally worth it, and they often play important roles in combos.

Low attacks, usually done by holding down and pressing the attack button, are great for breaking the opponent's guard. Low Attacks will hit an opponent unless they are blocking low.