When you surround yourself in the world of fluid mechanics you shall encounter many problems related to pressure. Hydrostatic and static pressure , they both sounds same but tbh they are different kinds of pressure. Also you shall see that there are 2 kinds of Hydrostatic pressure one real other imaginary. This animation video shall clarify the related problem, "What is the difference between static pressure and hydrostatic pressure? " and describe the concept of stagnation as well as dynamic pressure.