
During is a preposition, so it goes with a noun phrase:
- I met her during the summer holidays.
While is a conjunction, so it goes with a verb phrase:
- I met here while I was on holiday in Italy.
Summary: What is the difference between 'while' and 'during'?
During is a preposition, so it goes with a noun phrase:
While is a conjunction, so it goes with a verb phrase: