Difference between Death and Dead

Death: is a noun. It is a concept/idea of the state after life.

Dead: is an adjective that describes someone of being in a lifeless state.

My idea of writing about this is generally people become tense ( lifeless) when there is some problem or not able to achieve something. Ideally it’s a down phase. If we see an ECG then without this up and down phase, we are dead.

Death will come one day. Why to be in dead phase before that. Its a part of life.

We must be lively during down phase as well.