Job or Work

Is there any difference between job and work?
I have heard from a lot of people that their jobs are so boring/routine. I went to visit the International Truck and Engine in Indiana last Friday. The moment I entered the office, I was disappointed to see all the cubicles. The people seem to be like "batteries powering up a company". I just didn't feel good in that company.

I really don't want to have 8 to 5 kinda job where you are thrown piles of work to finish, where you don't learn new thing much. I don't think I can survive long in that kinda environment. I rather have 8 to 8 kinda work where I have control over the direction of my work/company, where I can prioritize my work, where I have to make difficult decisions, where I get to try/learn new things.

My work in ERC, however, is not boring. The environment is very supportive. I guess it's the challenge that keeps me interested in my work. The vast of knowledge I have gotten so far is unbelievable, at the expense of a lot of my free time. The ambition to make myself to be indispensable in ERC has driven me to keep improving my performance. However, in the end, I know I have to leave ERC...