| Sexuologie | sexology |
| Sexologie | sexology |
| Sexologe | sexologist |
| Sexologin | sexologist |
| Senologie | senology |
| Auxologie | auxology |
| Nephologie | nephology |
| Petrologie | petrology |
| Psephologie | psephology |
| Selenologie | selenology |
| Speleologie | speleology |
| Symbologie | symbology |
| Axiologie | axiology |
| Doxologie | doxology |
| Egologie | egology |
| Ethologie | ethology behavioural research |
| Gemmologie | gemmology gemology |
| Geologie | geology |
| Keltologie | Celtic studies |
| Lexikologie | lexicology |