A<unk>  is a device used to move gases, liquids or slurries.  A<unk>  moves liquids or gases from lower pressure to higher pressure, and overcomes this difference in pressure by adding energy to the system (such as a water system).  A gas<unk>  is generally called a compressor, except in very low pressure-rise applications, such as in heating, ventilating, and air-conditioning, where the operative equipment consists of fans or blowers.<unk> s work by using mechanical forces to push the material, either by physically lifting, or by the force of compression.
The earliest type of<unk>  was the Archimedes screw, first used by Sennacherib, King of Assyria, for the water systems at the Hanging Gardens of Babylon and Nineveh in the 7th century BC, and later described in more detail by Archimedes in the 3rd century BC. In the 13th century AD, al-Jazari described and illustrated different types of<unk> s, including a reciprocating<unk> , double-action<unk>  with suction pipes, water<unk> , and piston<unk> .
Pump
Itch
Pulse
Stretching
Poop Breath
Torque
Luminous intensity
Rebound tenderness