Difference between meal and nutrition in Korean
식사·영양
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.
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.
The difference
식사 means an eating time or a meal, like breakfast or dinner. 영양 is about the nourishment your body gets from that meal.