Hume on Chance vs. Probability

Hume argues there is no such thing as chance in the world, but people put themselves in a superior position, or probability, that things will happen. He continues to talk about how besides chance there are causes, which many cases, happen very regular and predictable, but at other points may prove different, and i thought it funny that instead of philosophers calling it chance, they try to figure out what kept the cause from happening in its usual way, instead of just saying luck or chance.