I don't think the OP was saying he doesn't know what "job" means, he was saying that they use two terms "task" and "job" that mean the same thing, so he doesn't

I don't think the OP was saying he doesn't know what "job" means, he was saying that they use two terms "task" and "job" that mean the same thing, so he doesn't know what the difference between the trackers are.