| Titration | titration |
| Filtration | filtration |
| Iteration | iteration |
| Migration | migration |
| Vibration | vibration |
| Situation | situation |
| Attraktion | attraction |
| Extraktion | extraction |
| Kastration | castration |
| Lustration | lustration |
| Tetragon | tetragon |
| Traktion | traction |
| Literatin | literati |
| Oration | collect |
| Adoration | adoration |
| Emigration | emigration |
| Kuration | cure |
| Operation | surgery operation |
| Ration | ration |
| -isation | -ization |