How do you say “untie” in Vietnamese?

Vietnamese words for “untie”

• cởiListenverb
  Hanoi [kəːj˧˩] · Saigon [kəːj˨˩˦]cởi dipping

  to untie; to take off

  for “untie” meaning: To loosen, as something interlaced or knotted; to disengage the parts of.

  • Cởi xích chó ra.Untie the dog.
• tháoListenverb
  Hanoi [tʰaːw˧˦] · Saigon [tʰaːw˦˥]tháo rising

  to dismantle

  for “untie” meaning: To loosen, as something interlaced or knotted; to disengage the parts of.

  • Tôi không tháo được nút thắt này.I can't untie this knot.