N별 is used when categorizing or grouping nouns together, roughly translating to “according to…” or “by….”. It can also appear as N별로, and is most commonly followed by the verbs 정리하다, 놓다, 분류하다 and others that have to do with organizing or classifying.
이 파일들을 날짜별로 분류했어요. I sorted the files by date.
크기별로 정리해 놓으세요. Organize these by size. 재활용품은 종류별로 분류해야 해요. You must sort recyclables according to their type.
In this week’s episode of my favorite cooking show 냉장고를 부탁해, the emcee commented on how the chefs for this third round of competition were 각 분야별 셰프들이 포진/ lined up according to their respective specialties: Italian, French, Bulgarian, and MSG.
Sutdy-Korean 