Answer:
Hydroponics means " work water" the system of growing uses a water nutrient mix constantly flowing to the root system of plant.
An aeroponic system the roots are suspended in air and occasionally misted with water and nutrients. The yield from hydroponic growing is less than the high yield of an aeroponic system. The amount of time to complete a growth cycle is also much faster in an aeroponic system.
Learn More at Http://aeroponichowto.com