Meaning and Usage
The verb '작용하다' primarily means 'to act on' or 'to have an effect on' something. It is often used in scientific, medical, or technical contexts to describe how one element influences another, such as medicine affecting symptoms or hormones influencing bodily functions.
Common Contexts
You will frequently see '작용하다' when discussing the effects of drugs, chemicals, hormones, or physical forces. It can also describe mechanical or electrical operations where one component causes another to function.
Collocations and Patterns
- '~에 작용하다': to act on or affect something (e.g., 약이 두통에 작용하다 - medicine acts on headache)
- '작용을 하다': to exert an effect or influence
- '작용력': the force or power of action
Register and Politeness
'작용하다' is a formal verb commonly used in academic, scientific, or technical language. It is not typically used in casual conversation.
Common Learner Mistake
Learners sometimes confuse '작용하다' with '사용하다' (to use). Remember, '작용하다' emphasizes the effect or influence on something, not just the act of using it. For example, '약이 작용하다' means the medicine has an effect, not just that it is used.