Coolants are essential fluids used in machinery and engines to prevent overheating and maintain optimal temperature conditions. Although the word coolant is commonly used in this context, there are several synonyms that can be used interchangeably. One common synonym for coolant is antifreeze, which is a chemical solution used in refrigeration systems and vehicles to lower the freezing point of water. Other synonyms for coolant include refrigerant, which is used in refrigeration systems, and heat transfer fluid, which is used in industrial machinery. Regardless of the synonym used, coolants play a critical role in maintaining the efficiency and durability of mechanical systems.