1. I will go abroad.

2. I am going to go abroad.

What is the difference between #1 and #2? Are both the same?

There's basically no difference between the two sentences.

The difference between #1 "I will go abroad" and #2 "I am going to go abroad" lies in the tense and the level of certainty.

#1 "I will go abroad" is in the simple future tense and implies a decision or intention made at the moment of speaking. It does not indicate any specific plans or arrangements.

#2 "I am going to go abroad" is in the present continuous tense and suggests that there are plans or arrangements already in place. It indicates a higher level of certainty than #1 and implies that the speaker has made definite plans to go abroad.

So, while both sentences convey the idea of going abroad, the second sentence (#2) suggests more preparation and certainty in comparison to the first sentence (#1).

The difference between sentence #1 and sentence #2 lies in the verb tense and the level of certainty expressed.

In #1, "I will go abroad," the verb "will" is used to express a future action. It indicates a definite plan or decision to go abroad. This form suggests a high level of certainty.

In #2, "I am going to go abroad," the verb phrase "am going to" is used to express a future action as well. However, this form suggests a more immediate or near future plan, and it can also imply a somewhat lower level of certainty compared to #1.

Overall, both sentences convey the idea of going abroad in the future, but there is a subtle difference in the level of certainty and the perceived timing of the action.