軽食

1. Origins, structure, and basic meaning

• Structure: 軽食(けいしょく) combines 軽, light, with 食, eating or a meal.
• Basic usage: It denotes a simple meal, such as a sandwich, and can overlap with a snack depending on context.

2. Common pitfalls and similar expressions

• Completion with 済ませる
  • 軽食を済ませた means finishing a light meal. It is different from merely ordering one.
• Lightness is not a nutritional measurement
  • 軽食 describes the character of a simple meal, not a designation with a specified calorie or nutritional threshold.