This is the 18731st most frequent Korean word.
신청서를
"Application form."
Here, '신청서를' refers to the object of the verb '작성해' meaning 'to write or fill out.' The application form is what needs to be filled in.
신청서를 작성해 주세요.
Please fill out the application form.
In this context, '신청서를' is the object of '제출하다,' meaning 'to submit.' It signifies the document that must be turned in.
이 신청서를 다음 주까지 제출해야 합니다.
You need to submit this application form by next week.
In this example, '신청서를' is the object of '작성했다,' the past tense of 'to write,' specifying that the application form was filled out as a prerequisite for event participation.