| A | B |
| Alloy | A mixture of metal and another element. |
| Amalgam | An alloy containing Hg, Ag, Zn. |
| Ores | Materials in Earth from which metals can be economically obtained. |
| Ceramic | Made from dried clay or claylike mixtures. |
| Glass | A ceramic without a regular crystal structure. |
| Cermets | Have properties of ceramics and alloys. |
| Recycling | Recovering and processing waste. |
| Plastic | Made from synthetic polymers. |
| Synthetic fiber | Made from a strand of synthetic polymers. |
| Composite | A mixture of two material, one embedded in another. |