| Kerogen | kerogen |
| erogen | erogenous |
| Kerosin | kerosene |
| Xerogel | xerogel |
| Rogen | roe |
| pyrogen | pyrogenic |
| gebogen | curved |
| verbogen | askew |
| verlogen | phony deceitful mendacious |
| verzogen | askew |
| Neogen | Neogene |
| Vermögen | capability fortune assets |
| vermögen | be able be capable |
| exogen | exogenous |
| kariogen | cariogenic |
| Bergen | Bergen |
| bergen | salvage save recover shelter bear |
| zergen | zerg provoke |
| Kragen | collar |
| kargen | economize |