| Osteologe | osteologist |
| Osteologie | osteology |
| Osteologin | osteologist |
| Ontologe | ontologist |
| Astrologe | astrologer astrologist |
| Geologe | geologist |
| Ideologe | ideologist |
| Theologe | theologian |
| Histologe | histologist |
| Kosmetologe | cosmetologist |
| Pathologe | pathologist |
| Sexologe | sexologist |
| Sinologe | sinologist |
| Astrologie | astrology |
| Ethologe | ethologist behavior scientist |
| Kosmologe | cosmologist |
| Mythologe | mythologist mythologer |
| Oktologie | octology |
| Onkologe | oncologist |
| Ontologie | ontology |