All attacks in striking arts can be separated into three basic categories.
As simple as it sounds, initiating an exchange by moving into range and striking at the opponent. Example: Jab
Make them miss, make them pay. Defending an opponent’s attack and then returning immediately with an attack of your own. Example: slipping outside the jab & then throwing a cross. These can be done reactively or pre-meditated by luring the desired attack & “setting a trap”
Making them miss with a defence whilst attacking at the same time (simultaneously). Example: Slipping outside a cross whilst also delivering a cross to the body. These are highly effective as there is no way to defend them, they are high risk though as the opponent’s attack must be predicted correctly before executing the counter. Timing must also be excellent to pull these off.