In process 和 In progress 有什麼分別

Process often refers to manufacturing and producing goods. So 'Work in process' more or less points towards a factory in operation in order to produce something out of it.

Progress means walking (closer) towards a goal, which could in another way be seen as improvements and developments as well.
Thus a sign with 'work in progress' written on can be hung on the wall outside a construction site, or simply that a teacher complimenting on a pupil that he is working in progress towards success.

Unless the 'work' is in pieces and countable and that you want to emphasize this point, people tend to just use 'work'.

2011-10-19 05:17:28 補充：
What I mean by "manufacturing and producing goods' doesn't necessarily set its scene in a chimney, as processing means handling and disposing, and procedures too. It's like mechanics or engineering work, more related to machinery works, if you know what I mean.

In Progress Or In Process