Difference between need and practical use in Korean
필요·활용
필요need
Need (필요) means something is required or helpful for what you want to do. You use it when you talk about needing things like water, time, money, or help. It is very common in everyday situations such as school, shopping, and travel.
활용practical use
활용 means using something in a useful or practical way. You use it when a person takes an object, idea, time, or skill and uses it for a purpose. It is often seen in the form 활용하다, which means "to make practical use of" something.
The difference
필요 means something is necessary or needed. 활용 is the action of actually making use of something you have.