While vs. Whilst

While or whilst?

The word while was first recorded in Old English and it can be used as a noun, a verb , a relative adverb , a conjunction , or a preposition. Whilst is a later form
and was first evidenced in the late 14th century. Whilst is more limited in scope than while , and can only be used as a conjunction and relative adverb, so
if you know the word you want is a noun, verb, or preposition, then while is the only possible option.

As conjunctions and relative adverbs, while and whilst mean exactly the same:
during the time when something is happening; at the same time as something else is happening:

E.g. I recommend not watching this movie while eating.

E.g. Anna kept us all entertained whilst we were waiting .

whereas (used to show a contrast):

E.g. He was presented with a watch, while his wife was given a bunch of flowers.

E.g. Mark looks after the business side, whilst Diana is the expert in public relations .

in spite of the fact that; although:

E.g. The thought of flying, while appealing, was not at the top of my list of things to do .

E.g. I detest violence but for once, whilst I still didn’t agree with it, I could understand it.