"until" or "up to"

"तक"

English Usage: "I will wait until 5 PM."

Hindi Usage: "मैं 5 बजे तक इंतजार करूंगा।"

"to" or "as far as"

"तक"

English Usage: "We walked to the river."

Hindi Usage: "हम नदी तक चले गए।"

"as long as"

"जब तक"

English Usage: "I will stay as long as you need me."

Hindi Usage: "मैं तब तक रहूंगा जब तक तुम मेरी जरूरत हो।"