What are the similarities and differences between tolerance and forbearance?

The similarity between tolerance and forbearance is that when we encounter something, you should choose to control yourself as much as possible, not to care too much, or to care too much. Tolerance means forgiving some people or things, or putting yourself in the other's shoes and thinking that he has his reasons for doing so, but forbearing is really unhappy, and I can't understand his difficulties or reasons. I'm just saying for now, for the time being.