Breaking ball is a term used in baseball to describe a pitch that breaks or curves as it approaches the batter. This pitch can be difficult to hit as it changes direction and speed, making it challenging to predict. However, there are several synonyms for breaking ball that are used in different contexts. These include curveball, slider, screwball, and knuckleball. Curveball refers to a pitch that curves downwards, while a slider curves to the side. A screwball moves in the opposite direction of a curveball and a knuckleball is unpredictable and uses no spin. Each of these pitches can be effective in different situations and require different techniques to master.