/ənˈtɪl/
conj (also till) -guncha (-kuncha, -quncha)
prep (also till) ...gacha, ...ga qadar
We can use until in both formal and informal English. Till is more common in informal English and is not usually used at the beginning of a sentence. Make sure that you only use till/until to talk about a time. We use as far as to talk about distance. We use up to to talk about a number.