| Ufologie | ufology |
| Ufologe | ufologist |
| Urologie | urology |
| -ologie | -ology |
| Aerologie | aerology |
| Auxologie | auxology |
| Oologie | oology |
| Urologin | urologist |
| Apologie | apology apologia |
| Biologie | biology |
| Egologie | egology |
| Geologie | geology |
| Ludologie | ludology |
| Myologie | myology |
| Noologie | noology |
| Otologie | otology |
| Runologie | runology |
| Urologe | urologist |
| Zoologie | zoology |
| Ökologie | ecology |