Power brakes are crucial for any automobile to ensure safety and comfort while driving. However, there are some synonyms for the term "power brake," which can come in handy when referring to it. Some of the most common synonyms for power brakes are "hydraulic brakes," "servo brakes," "vacuum booster brakes," and "power-assisted brakes." Hydraulic brakes use a fluid to transfer force from the driver's foot to the brake pads. Servo brakes rely on a vacuum in the engine to increase the force applied to the brakes. Vacuum booster brakes are similar to servo brakes, but they use a vacuum stored in a canister, while power-assisted brakes use an electric motor to assist the driver. Knowing these synonyms can be helpful in understanding how a car's braking system works.