反射

1. Origins, structure, and basic meaning

• Structure: 反射（はんしゃ） means light, sound, or something similar bouncing back from a surface.
• Basic usage: Use it for reflected light on a lake or sound echoing off a wall.

2. Common pitfalls and similar expressions

• Reflection versus absorption
  • 反射 describes light, sound, or similar energy bouncing back; 吸収 describes it being taken into a material.