What are the two main sides of all pumps?

The two main sides of all pumps are identified as intake and discharge. The intake side is where the fluid enters the pump, and its design is crucial for drawing the fluid in efficiently. The discharge side is where the fluid exits the pump after it has been pressurized or moved by the pump's mechanics. Understanding the roles of both sides is fundamental for operating and troubleshooting pumps in various applications, including firefighting and industrial settings.

The options that mention supply and return or pressure and vacuum refer to different concepts that can be relevant in specific systems but do not accurately describe the basic functional sides of a pump. Similarly, intake and exhaust might suggest a different context, such as in engines or ventilation systems, rather than the operation of a pump.