Difference between to send and to receive in Korean
보내다·받다

보내다to send
보내다 means to send something to another person or place. You can use it for letters, messages, photos, emails, and packages. It is a common everyday word for sending things by phone, online, or by mail.

받다to receive
받다 means "to receive" or "to get" something from another person. You can use it for things like gifts, letters, help, medicine, or phone calls. It is a very common everyday verb when something comes to you.
The difference
받다 is the opposite action. If you 보내다 something, another person 받다 it.