| sandstone by composition |
| clay by function |
| igneous rock by composition: chemical |
| natural bituminous material |
| biological components |
| copper alloy |
| plastic by property |
| wood and wood by product |
| pepo |
| pile weave |
| rock by form |
| fine-grain material |
| collagenous material |
| Mammalia (class) |
| protein |
| extraterrestrial bodies |
| extrusive rock |
| Erythroxylaceae (family) |
| money (objects) |
| surface preparation materials |
| varnish by composition |
| sedimentary rock by form |
| sandstone by composition: aggregate type |
| metamorphic rock |