class of chemical compounds composed of iron and oxygen
Electrochemically oxidized iron (rust)
An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).