Difference between to organize and organizing in Korean
정리하다·정리

정리하다to organize
"To organize" means to put things in order and make them neat or easy to find. In Korean, 정리하다 is used when you clean up a space, sort your things, or arrange your thoughts. You can use it for a room, a desk, notes, or even a schedule.

정리organizing
정리 means putting things in order and making them neat. At home, you can use it when you clean up a room, fold clothes, or arrange things on a desk. It can also be used for sorting or packing items in everyday life.
The difference
This is the noun form, not the action word. Use it for "organization" or "clean-up," but use 정리하다 when you mean to organize something.