When do you use will not vs won't?

Answer 1

"Will not" and "won't" are interchangeable, but "won't" is the contracted form and is more commonly used in informal contexts, such as casual conversations or writing. "Will not" is often used for emphasis or in formal writing. Both forms express a refusal or a future action that is not going to happen. For example, "I will not go to the party" emphasizes the refusal more than "I won't go to the party."