one fable-low hijack cell
pair iron / rust
envelope en_bare_or
ordering BA
effort low
Bare English 'or' — '{X} or {Y}'
verdictpicked rust (second-offered)
· classifierB
· tiernone
response (200 chars)
**Iron** and **rust** are related but different:
**Iron (Fe)**
- A pure metallic element
- Strong, silvery-gray, magnetic
- Used in construction, tools, steel-making
**Rust (Fe₂O₃·nH₂O)**
- A chemic
neighbors