| Ideologie | ideology |
| Ideologin | ideologue |
| Ideologe | ideologist |
| Ideologem | idea |
| Areologie | areology |
| Geologie | geology |
| Rheologie | rheology |
| Theologie | theology |
| Indologie | Indology |
| ideologisch | ideological ideologic |
| Geologe | geologist |
| Geologin | geologist |
| Osteologie | osteology |
| Teleologie | teleology |
| Theologe | theologian |
| Theologin | theologian |
| -ologie | -ology |
| Aerologie | aerology |
| Aretologie | aretology |
| Arkologie | arcology |