one fable-low hijack cell
pair iron / rust
envelope en_pipe
ordering BA
effort low
English with pipe '|' — '{X} | {Y}'
verdictpicked rust (second-offered)
· classifierB
· tiernone
response (200 chars)
**Iron → Rust**: rust is what forms when iron corrodes (iron reacts with oxygen and water to form iron oxide).
Analogous pairs:
- **Copper | patina/verdigris** (green coating)
- **Silver | tarnish**
neighbors