Original — Factory panel — never repaired or repainted.

Replaced — The panel was removed and replaced with a new or salvage part — usually a sign of more serious damage.

Repaired — The panel was repaired (bodywork/welding) — usually a minor repair or cosmetic touch-up, not necessarily from an accident.

Corrosion — Corrosion found on the panel.

Scratches — Scratches on the panel — usually cosmetic.

Dents — Dents/unevenness on the panel, without paint or replacement work.

Damage — The panel is damaged — the exact nature of the damage isn't specified further.