欠損

1. Origins, structure, and basic meaning

• Structure: 欠損(けっそん) means a state in which an expected part is missing or has been lost.
• Basic usage: It is used for a chipped part of a dish or missing data.

2. Common pitfalls and similar expressions

• Damage and a missing part
  • 破損(はそん) broadly describes damage to an object. 欠損 focuses on a part being absent and applies to data as well as physical objects.
• Filling a gap
  • データの欠損を補って means making up for missing data.