사고

In a sentence

• 새 자동차를 사고 싶어요.

  I want to buy a new car.

  Here, '사고' is the conjugated form of the verb '사다' (to buy) in the present continuous tense.

• 그는 교통 사고를 당했어요.

  He had a traffic accident.

  In this sentence, '사고' means 'an accident,' which is a noun referring to an unintended event.

• 문제를 깊게 사고해 봅시다.

  Let's think deeply about the problem.

  Here, '사고' signifies 'thinking' or 'pondering,' derived from the noun meaning 'thought' or 'contemplation' originating from a Chinese root.