bài

noun  

• Tag, tablet

• Card, card-game
  • đánh bài
    to play cards
  • cỗ bài
    pack of cards

• Resort, course of action
  • "chiến, hoà, sắp sẵn hai bài"
    war or peace, both courses of action are open
  • đánh bài lờ
    to turn a deaf ear and blind eye to it
  • tính bài chuồn
    to consider flight as the only resort

• Lesson
  • bài lịch sử
    history lesson