Difference between need and request in Korean
필요·부탁

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.

부탁request
부탁 means a request, or asking someone to do something for you. You use it when you need help, want a favor, or ask politely for something. In daily conversation, it often appears in simple expressions like “please” or “I asked someone.”
The difference
need (필요) and request (부탁) are nearby Korean vocabulary items learners often meet together. Use “need” when 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,… Use “request” when 부탁 means a request, or asking someone to do something for you. You use it when you need help, want a favor, or ask politely for something…