Death, in the basic meaning is this:
the act of dying; the end of life; the total and permanent cessation of all the vital functions of an organism. Compare brain death.
But in every society, it has a deeper meaning than what a Dictionary will tell you. Every Religious man believes a life after it. Every philosopher tries to understand it. Scientist try to delay it. But in the end we all must meet it, it is inevitable.
With that said. Do you fear your own mortality? Do you fear for what you will face afterwards? Do you fear for what will happen to your friends and family? Do you fear it at all?