Whilst and While

While is a synonym for whilst in part of speech topic. In some cases you can use "While" instead a conjunction "Whilst", when it comes to topics like duration, during, though, when.

While conjunction - At or during the time that.

Whilst is a synonym for while (British) in during topic. You can use "Whilst" instead a conjunction "While", if it concerns topics such as though, when, as long as. popular alternative