Difference between practice and plan in Korean
연습·계획

연습practice
Practice means doing something many times so you can get better. In Korean, 연습 is used for practicing skills like speaking, music, sports, or daily phrases. You will often see it with 하다, such as 연습해요, to mean "I practice."

계획plan
A plan is something you decide to do in the future. In Korean, 계획 means your idea or schedule for what you will do. You can use it when talking about your day, school, shopping, or travel.
The difference
연습 means doing something again and again to get better. 계획 is only your idea or schedule, not the action.