| steel(noun, name, material, metal) |
| metal(noun, name, material) |
| pewter(noun, name, material, metal) |
| aluminum(noun, name, material, metal) |
| antimony(noun, name, material, metal) |
| brass(noun, name, material, metal) |
| bronze(noun, name, material, metal) |
| chrome(noun, name, material, metal) |
| chromium(noun, name, material, metal) |
| copper(noun, name, material, metal) |
| cupronickel(noun, name, material, metal) |
| gold(noun, name, material, metal) |
| gunmetal(noun, name, material, metal) |
| iridium(noun, name, material, metal) |
| iron(noun, name, material, metal) |
| lead(noun, name, material, metal) |
| magnesium(noun, name, material, metal) |
| mercury(noun, name, material, metal) |
| platinum(noun, name, material, metal) |
| silver(noun, name, material, metal) |