| Rekurrenz | recurrence |
| rekurrent | recurrent |
| Konkurrenz | competition competitor |
| Reverenz | reverence |
| Referenz | reference |
| Rekorder | recorder |
| Rektorin | headmistress |
| Rekursion | recursion |
| rekurrieren | refer back return appeal |
| rekursiv | recursive |
| bekunden | testify express state show |
| Konkurrenz- | competitive |
| Kurre | turkey |
| Kürzen | abbreviation |
| kürzen | shorten reduce simplify |
| kurven | tool |
| Konkurrent | competitor |
| Kookkurrenz | co-occurrence |
| abkürzen | take a short cut shorten curtail cut short abbreviate |
| erküren | choose |