In simplest terms, an above ground pool pump is a flooded suction pump, which means the water level must be higher than the pump for it to operate, and an inground pump has the ability to draw water up from a level lower than the pump. The engineering and structure of these two different types of pumps is what makes them work the way they do. This means that, in a typical installation, you could use an inground-specific pump on an above ground pool, but not an above ground pump on an inground pool with the water level below the pump.
underground has soil or is wet and above ground is dry or grassy
Above ground pumps have to be gravity fed, and the in ground pumps pull a vacuum and draw the water to them.
rhizoids are below-ground, stolons are above-ground
If this is for an above ground swimming pool, I would level the ground before putting up the pool. Otherwise, the weight of the water might collapse one of the walls of the pool.
In ground swimming pools are usually bigger than above ground pools. Although rather more expensive, in ground pools will last longer than above ground pools.
form_title= Swimming Pool Supplies form_header= Get all the pool supplies you need to enjoy your summer. What is the square footage of your swimming pool?*= _  Is your pool in ground or above ground?*= () In Ground () Above Ground What supplies do you need?*= _ 
The cost of above ground swimming pools vary by make, model, and location. However, for a basic quality swimming pool, expect to pay at least $3,000.
With a tape measure.
form_title= Swimming Pool Liners form_header= Take a dip in your pool with a new liner. What is the square footage of your swimming pool?*= _  Is your pool in ground or above ground?*= () In Ground () Above Ground Do you need to remove an old liner?*= () Yes () No
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