something that is not possible, that is
unreal, that is hypothetical
For example, if you are not rich, you might say
1) I wish I were rich
If you are sorry that you said bad things, you might say
2) I wish I hadn’t said those bad things
If you want something to happen, but you don’t
think it will, you might say
3) I wish my boss would stop giving me so much work
_______
On the other hand, “I hope” is used to refer
to something that is possible
You might say
1a) I got a new job! I hope I will be rich one
day / I hope I am rich one day
2a) I said bad things. I hope that John was not
offended by my words. I didn’t mean them
3a) My boss often gives me too much work. I
hope he doesn’t give me any more work to do
over the weekend