Level 6

회전

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Meaning and Usage

The noun '회전' primarily means 'rotation' or 'revolution,' referring to the act of turning around an axis or center. It is commonly used in scientific contexts (like the Earth's rotation) and everyday objects (such as revolving doors).

Common Contexts

  • Scientific phenomena: describing planetary or mechanical rotations.
  • Everyday objects: revolving doors, rotating chairs, or machinery parts.

Collocations and Patterns

  • 회전문 (revolving door): a door that rotates to allow passage.
  • 회전 속도 (rotation speed): the speed at which something rotates.
  • 회전하다 (to rotate): the verb form related to 회전.

Register and Usage Notes

'회전' is a formal noun often used in written and technical contexts but also appears in daily conversation when describing objects or actions involving rotation. It is not typically used for abstract or metaphorical rotations.

Common Mistakes

Learners sometimes confuse '회전' with '자전' (self-rotation) or '공전' (revolution around another object). Remember, '회전' is a general term for rotation, while '자전' and '공전' specify types of rotation in astronomy.

Example Sentences

지구는 하루에 한 번 자전과 함께 태양 주위를 회전한다.

Jiguneun harue han beon jajeongwa hamkke taeyang juwireul hoejeonhanda.

The Earth rotates once a day and revolves around the Sun.

회전문을 밀고 들어가면 바로 로비가 나온다.

Hoejeonmuneul milgo deureogamyeon baro robi ga naonda.

If you push the revolving door and enter, the lobby appears immediately.

기계의 회전 속도를 조절해야 한다.

Gigaeui hoejeon sokdoreul jojolhaeya handa.

You need to adjust the rotation speed of the machine.