Aquifer

Aquifer explained in an easy to understand way:

Imagine trying to find a lost sock in a packed drawer full of clothes. Just like how you have to sift through layers of clothing to find that sock, an aquifer is like a hidden water source tucked away beneath layers of soil and rock underground. In both cases, the sock and the water are valuable resources that are concealed within layers, requiring some effort to reach but are essential once found.