need vs practical use in Korean

필요vs활용

need

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.

When to use need
practical use

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.

When to use practical use

How they differ

필요 means something is necessary or needed. 활용 is the action of actually making use of something you have.