To me ...job is something you do, go home at 5:30 (or whatever) and don't think about. Isn't going to take you anywhere much ... You might enjoy it, you mightb not.
Career is more emotionally invovling, less 'putdownable' and has future development inbuilt. But not necesarily immeadiately. You have a sense of 'this is what i do'
Actually, reading that, I DO have a career ... just one I care less about than I did BC