How do you say “milestone” in Vietnamese?

Vietnamese words for “milestone”

• cây sốListennoun
  Hanoi [kəj˧˧ so˧˦] · Saigon [kəj˧˧ ʂow˦˥]cây level số rising

  kilometer/kilometre; a marker made of concrete; similar to a headstone

  for “milestone” meaning: A stone milepost (or by extension in other materials), one of a series of numbered markers placed along a road at regular intervals, typically at the side of the road or in a median.

• mốcListennoun
  Hanoi [məwk͡p̚˧˦] · Saigon [məwk͡p̚˦˥]mốc rising

  mouldy

  for “milestone” meaning: An important event in a person's life or career, in the history of a nation, in the life of some project, etc.

  • Ngày hôm đó là một cột mốc quan trọng trong dự án của chúng tôi.That day was an important milestone in our project.