Conceptual death, the death of a conceptual person or life, is what we see because delusion does not see that every moment there is a rising and passing away.
Every moment, things are dying in the sense of changing.
And so, there are the small deaths and the big deaths. Actually the big death is not real.
Because we’re in samsara, the big death doesn’t mean the end of life – the big death brings you to another life. That stream of consciousness doesn’t actually die.
But every moment, a mind dies – and that’s the real death. But we don’t see the real death because we miss seeing the real death, we fear the fake death.