Until Vs. Unless

Do you know how to use these words?

1_We use "until" when we want to talk about a point in time that something happens. Something happens or will happen until a certain time. For example:

>>I waited until 6:30, but Ravi didn’t come. So I left the coffee shop.
This means that 6:30 was the point in time that I stayed in the coffee shop while waiting for Ra

vi.

>>I have to work until 9 tonight.
This means I am going to continue working, and then stop at 9:00.

2_We use "unless" to talk about a condition and a result. The condition needs to happen, and if it doesn’t happen, the result will not happen. We use unless in negative sentences. For example:

>>I don’t want to buy a new phone unless it has long battery life.
This means if the phone has a long battery life, I will buy it. Otherwise, I will not.

>>I won’t go to the party unless you come with me.
This means if you come with me, I will go to the party. If you don’t come with me, then I won’t go to the party

>>I can’t take a vacation unless I have enough money.
This means if I have enough money, I will take a vacation. Otherwise, I will not.
>>>> Can you wait until something happens, or do you prefer not to wait? I won’t know the answer unless I hear from you! :-)