| A | B |
| Alloy | A mixture of a metal and one or more other elements. |
| Amalgam | An alloy that contains Hg, like a dental filling. |
| Ores | Rocks from which metals can be obtained. |
| Ceramic | A material made from dried clay or claylike mixtures. |
| Glass | A ceramic with out a regular crystal structure. |
| Cerments | Ceramic metals, have propterties of both ceramics and alloys. |
| Recycling | The recovering and processing of waste material. |
| Plastic | A material made from synthetic polymers. |
| Synthetic fiber | A man made polymer fiber. |
| Composite | A mixture of two materials, one embedded in the other. |