| Speläologe | speleologist |
| Speläologie | speleology |
| Speleologie | speleology |
| Speläologin | speleologist |
| Selenologe | selenologist |
| Sexologe | sexologist |
| Esperantologe | Esperantologist |
| Speläothem | speleothem |
| Archäologe | archaeologist archeologist |
| Oneirologe | oneirologist |
| Palynologe | palynologist |
| Pathologe | pathologist |
| Petrologie | petrology |
| Phallologe | phallologist |
| Phonologe | phonologist |
| Podologe | podiatrist |
| Pseudologe | pseudologue |
| Scientologe | Scientologist |
| Selenologie | selenology |
| Sexologie | sexology |