reject

1. Origins, structure, and basic meaning

• Structure: 排 has 11 strokes and the on-reading はい. 排水 (はいすい) and 排除 (はいじょ) concern draining water or removing something.
• Basic usage: 排水 means drainage or discharged water; 排除 means exclusion or removal of an obstacle.

2. Common pitfalls and similar expressions

• Drained water and opinions that must not be excluded
  • 屋上の排水口 means a roof drain. 工場の排水は、基準を満たすまで処理される means factory wastewater is treated until it meets the standards.
  • 議論から排除してはいけない prohibits excluding differing opinions from the discussion. 障害物を排除した means removed an obstacle that was blocking the road.