أُريدُ أَنْ أذْهَبَ and أُريدُ الذَّهابَ – Does it mean the same?

No, they both mean exactly the same: I want to go.

The word ذِهابٌ is the مَصْدَر of ذَهَبَ.

You can build the الْمَصْدَر الْمُؤَوَّل by using the particles أَنْ or ما. They are a so called حَرْف مَصْدَرِيّ.

Let us have a look at it:

أَنْ يَذْهَبَ

=

ذَهابٌ

الْمَصْدَر الْمُؤَوَّل

=

الْمَصْدَر الصَّرِيح

going; go

=

going; go

Watch out: The verb in the sentence above has a فَتْحة at the end as it is preceded by أَنْ.

Therefore, the verb has to be مَنْصُوب.