How is the difference between "suppose" and "assume" ?
If sth done by sb doesn't meet another one's expectation, which response would be possible to hear?

I assume you have already finished it.
I suppose you have already finished it.

Thank you for your answering!

Question

How is the difference between "suppose"  and "assume" ?
If sth done by sb doesn't meet another one's expectation, which response would be  possible to hear?

I assume you have already finished it.
I suppose you have already finished it.

Thank you for your answering!

Answer

Really good question!

If I use "assume", I am more certain that you have finished it. I think you have finished it.
If I use "suppose", I am less certain that you have finished it. I think you have finished it but I am not certain.