| Doktor | doctor physican |
| Doktorat | doctorate |
| Doktorin | Doctor |
| Doktorand | Ph.D. candidate Ph.D. student doctorand |
| Doktorgrad | doctor's degree |
| doktorieren | doctor |
| Doktorandin | Ph.D. candidate Ph.D. student doctorand |
| Doktorfisch | surgeonfish |
| Doktortitel | doctor's degree doctoral level |
| Doktorvater | supervisor thesis advisor |
| Hektor | Hector |
| Aktor | actuator |
| Faktor | factor merchant |
| Lektor | lector reader lecturer literary editor |
| Liktor | lictor |
| Rektor | rector principal |
| Sektor | sector |
| Vektor | vector |
| Viktor | Victor |
| Donator | giver |