This is the 718th most frequent Korean word.
보내는
"Sending" or "spending" (depending on context).
Here, '보내는' is used as a present participle describing the act of 'sending' letters.
나는 친구에게 편지를 보내는 것을 좋아합니다.
I enjoy sending letters to my friend.
In this example, '보내는' is used to describe 'spending' time in a specific way.
휴가 동안 책을 읽으면서 시간을 보내는 것이 좋습니다.
It is nice to spend time reading books during the vacation.
Here, '보내는' refers to 'sending' children to school, emphasizing a regular activity.