시계

In a sentence

• 내 방에 있는 시계는 아버지가 선물해 주셨어.

  The clock in my room was a gift from my father.

  Here, '시계' refers to a physical clock that is a part of the setting in the sentence.

• 그 아이는 시계처럼 정확하게 행동해.

  That child acts as precisely as a clock.

  In this usage, '시계' is used metaphorically to describe the precision of someone's actions.

• 나는 시계를 고치기 위해 도구를 가져왔다.

  I brought tools to fix the watch.

  In this sentence, '시계' refers specifically to a watch that is an item being repaired.