'Will' is a modal verb used to refer to the future. It is also used to talk about willingness, possibilities, etc. Take a look at the following examples:

'Going to' is a phrase that is paired with the auxiliary verb 'be:' be + going + to. It is used to talk about the past and the future. It is also used to express predictions and future events. Have a look:

We use 'will' and 'going to' to make predictions about the future:

However, there is a small difference between them.

We use 'will' to make predictions without any certain evidence. These predictions are only based on personal opinions and experiences. For example:

'Going to' is used to make predictions with evidence. These predictions are based on actual evidence that are available at the moment. For instance:

We use 'will' to express decisions that are made at the moment of speaking about the future. Take a look:

'Going to' is used to talk about future actions or events that were planned in advance. Have a look:

We use 'will' to talk about events that will happen in the future and their occurrence is a general fact. For instance:

'Going to' is used to talk about future upcoming events in the future. These events may or may not happen. For example:

We can create negative sentences with 'going to' and 'will.'
'Will' is a modal verb and therefore when creating a negative sentence, we simply add 'not' to 'will' as illustrated below:

Here are some examples for the negation process:

To create a negative sentence with 'going to,' we simply add 'not' to the auxiliary verb 'be':

For instance:

'Will' and 'going to' can be used to make interrogative forms:

We can make yes/no questions and wh- question with 'will.'

To make yes/no questions. we put 'will' at the beginning of the sentence followed by subject and the main verb. Have a look:

To create wh-questions, we begin with a wh-word such as what, when, where, who, why, and how followed by a 'will,' the subject, and the base form of the main verb. Look at these examples to see this process in action:

We have the same two ways to make questions with 'going to.'

We make yes/no questions, we put the verb 'to be' at the beginning of the sentence, the subject, and the rest of the sentence. For example:

To make wh- question, we start the question with the wh-word, then the verb 'to be,' the subject, 'going to,' and the rest of the sentence. For example: