| Ideologem | idea |
| Ideologe | ideologist |
| Ideologin | ideologue |
| Ideologie | ideology |
| Geologe | geologist |
| Theologe | theologian |
| Videoblog | vlog |
| Ideogramm | ideogram |
| ideologisch | ideological ideologic |
| widerlegen | disprove refute |
| Areologie | areology |
| Geologie | geology |
| Geologin | geologist |
| Osteologe | osteologist |
| Rheologie | rheology |
| Theologie | theology |
| Theologin | theologian |
| -ologe | -ologist |
| Bryologe | bryologist |
| Histologe | histologist |