'Tragedy' in the Bible

Consider someone who is alone, having neither son nor brother. There is no end to all of his work, and he is never satisfied with wealth. "So for whom do I work," he asks, "and deprive myself of pleasure?" This, too, is pointless and a terrible tragedy.

I have observed a painful tragedy on earth: Wealth hoarded by its owner harms him,

This is also a painful tragedy: However a person comes, he also departs; so what does he gain as he labors after the wind?

There is a tragedy that infects everything that happens on earth: a common event happens to everyone. In fact, the hearts of human beings are full of evil. Madness remains in their hearts while they live, and afterwards they join the dead.

Here's another tragedy that I've observed on earth, a kind of error that comes from an overseer: