I would argue that the two terms, “job” and “occupation”, have different senses myself, that an occupation is a broader scope term than job. That is, I could say that one of my current occupations is writing erotica, but I wouldn’t say that writing erotica is one of my jobs. A job, in my mind, implies a social relationship with an employer. I suppose you could say that I am self-employed in some sense, but even that term implies, to me, a more formal relationship between a person their work. In any case, though, my point stands. You aren’t taking any real issue with my argument, you just think I’m using words wrong. At this point, you just want to have an argument over definitions, which isn’t interesting to anyone.