| Speläologin | speleologist |
| Speläologie | speleology |
| Speleologie | speleology |
| Speläologe | speleologist |
| Selenologin | selenologist |
| Sexologin | sexologist |
| Esperantologin | Esperantologist |
| Archäologin | archaeologist |
| Ideologin | ideologue |
| Oneirologin | oneirologist |
| Osteologin | osteologist |
| Petrologie | petrology |
| Phallologin | phallologist |
| Phonologin | phonologist |
| Podologin | podiatrist |
| Politologin | political scientist |
| Pomologin | pomologist |
| Scientologin | Scientologist |
| Seismologin | seismologist |
| Selenologie | selenology |