Hydraulic ram, a device used to lift water to higher elevations, has several synonyms to its name. One of them is the water-powered pump, which works on the principle of hydraulic pressure and uses the force of water to lift other water to a higher height. Another synonym is 'water hammer' due to the banging sound it makes when it works. A hydraulic jack is another synonym that uses the same principle of hydraulic pressure to lift weights. Some other synonyms include 'hydropneumatic ram' and 'hydram.' All these devices work on hydraulic pressure, converting the energy from water flow into mechanical work that helps in lifting water.