During and while have very similar meaning but they are used slightly differently in sentence structures.
During is followed by a simple noun:
The fireworks started during the concert.
I fell asleep during the party.
There was a robbery during the festival.
While on the other hand requires a clause (subject and verb):
The children played while their parents cooked dinner.
I was reading a book while I was sitting in the garden.
The men drank whiskey while their wives drank wine.