поки

In a sentence

• Поки ми чекаємо на потяг, давайте вип'ємо кави.

  While we wait for the train, let's have some coffee.

  Here "поки" means "while," indicating simultaneous actions.

• Ти не можеш йти додому, поки не закінчиш роботу.

  You cannot go home until you finish your work.

  Here "поки" means "until," signifying a condition that must be met before an action occurs.

• Поки вони готують їжу, ми можемо накрити стіл.

  While they are cooking food, we can set the table.

  Here "поки" means "while," indicating activities happening at the same time.