| Biofaktor | biofactor |
| Biofilter | biofilter |
| bioaktiv | bioactive |
| Faktor | factor merchant |
| Primfaktor | prime factor |
| Störfaktor | disruptive element |
| Bivektor | bivector |
| Biotop | biotope |
| Formfaktor | form factor |
| Klirrfaktor | distortion factor |
| Aktor | actuator |
| Distraktor | distracter |
| Einakter | one-act play |
| Reaktor | reactor |
| Refraktor | refracting telescope refractor |
| Traktor | tractor |
| Bootsektor | boot sector |
| Direktor | manager director headmaster principal senior vice president |
| Doktor | doctor physican |
| Induktor | inductor |