meal vs nutrition in Korean
식사vs영양

식사meal
식사 means a meal, or the act of eating a meal. It is a polite, common word you can use for breakfast, lunch, or dinner. You will often hear it in daily conversation, for example when asking if someone has eaten.
When to use meal
영양nutrition
Nutrition (영양) is the healthy energy and goodness your body gets from food. We use this word when talking about food that helps you grow, stay strong, and feel well. You can say a food has a lot of nutrition or that someone needs good nutrition.
When to use nutritionHow they differ
식사 means an eating time or a meal, like breakfast or dinner. 영양 is about the nourishment your body gets from that meal.