Hook balls are a common term used in bowling, where the ball curves in a hooked manner towards the pins. However, there are many other synonyms for the term 'hook balls' that can be used. Some of them include 'curve balls', 'spin balls', 'break balls' or even 'banana shots.' These synonyms indicate that the ball is curving or hooking in a specific direction towards the pins. Each of these terms describes the same action of a ball spinning and hooking in a curved direction to achieve the desired trajectory towards the target. Hence, these synonyms can help to add variety and depth to a bowler's vocabulary while describing the movements of their ball.