There are literally thousands of different pumps available with the basic selection criteria of flow rate at a given head.
The graph below illustrate an examples of a standard performance curve.
Pump A - 10m /hr @ 6m Head
Pump B - 13m /hr @ 6m Head
Pump C - 18m /hr @ 4m Head
Pump D - 20m /hr @ 8m Head
Some of the considerations for choosing the correct pump are as follows;
Vertical height the water is being pumped to
Pressurised vessels on the system
Desired System Flow rate