Death of cell :

You may think of it as a bad for cells in your body to die.

In many cases, that's true: it's not good for cells to die because of an injury (for example, due to scrape or a harmful chemical), which is called necrosis.

However, some cells of our body die; not randomly but in a carefully controlled way.

For example, during the embryonic development, the cells between the embryonic fingers died in a process called apoptosis to give a definite shape to the fingers.

This is a common form of programmed cell death where cells undergo "cellular suicide" when they receive certain signals.

Apoptosis involves the cell death, but it benefits the organism as a whole (for instance, by letting fingers develop or by eliminating potential cancer cells).