Difference between mustard and food in Korean
겨자·음식
겨자mustard
겨자 means mustard, a strong and spicy sauce or powder made from mustard seeds. People often eat it with hot dogs, sandwiches, sausages, and other foods. In Korean, it can also mean the sharp mustard flavor used in some sauces and dressings.
음식food
Food means things that people eat. In Korean, 음식 means meals, dishes, or food in general. You can use this word when talking about cooking, restaurants, shopping, or what you like to eat.
The difference
음식 means food in general. 겨자 is one specific food item or sauce, not all food.