пачек

In a sentence

• Я купил две пачки чая.

  I bought two packs of tea.

  Here, 'пачки' refers to specific packages or boxes containing leaves of tea.

• В пачке было много документов.

  There were many documents in the folder.

  In this usage, 'пачке' describes a bundle or collection, potentially tied together, of papers or documents.

• Мне нужно взять пачку стирального порошка.

  I need to get a pack of laundry detergent.

  Here, 'пачку' refers to a contained unit of a product, such as a pre-packaged detergent in a bag or box.