Rules for till/until and while/whilst

[sohala]

Hi there

Can anyone explain the rules for using

1. "till" or "until" insentences

2. "while" or "whilst" in sentences.

Regards
Sohala

[minazajani]

you can use till and untill interchangebaly in both writing and speech, though as the first word in a sentence until is more common. eg. Untill you get that paper written, don't even think about going to the movies.

[engee30]

whilst means the same as while; the former is more formal, though.

[Anglika]

Till but Until