Here's a breakdown:

* Aquifer: A layer of rock or soil that can hold and transmit groundwater.

* Water Table: The upper surface of the zone of saturation. This means it's the level below which the ground is saturated with water.

Think of it like this: imagine a sponge. The water table is the line where the sponge is completely soaked. Above the water table, the soil or rock is still porous but not fully saturated with water.