What is the difference between Will and Going to ?Feel free to just provide example sentences.

Will is used to express future actions decided at the moment of speaking while Going to describes future plans decided before the moment of speaking.
Examples:

I‘ll have salad now. (will)

I’m going to visit my aunt next Friday. (going to)

Will is used to indicate a prediction based on personal opinions or experiences while going to is used to express a prediction based on present evidence.
Examples:

I think United will win the game. (will)

Look at those black clouds. It is going to rain. (going to)

Will expresses a future fact; going to is used to describe something is about to happen.
Examples:

The sun will rise tomorrow. (will)

Get back! The bomb is going to explode. (going to)

Will is used to make a promise, an offer, a threat or refusal.
Examples:

A promise:

I promise I won’t tell anyone you broke the window.

An offer:

I‘ll take you to the airport tomorrow.

A threat:

I‘ll tell your parents what you did.

A refusal:

No, I won’t cook your dinner, you can cook it yourself