| Notensystem | stave |
| Nervensystem | nervous system |
| Sonnensystem | solar system Solar System |
| Sternsystem | star system |
| Tonsystem | pitch space |
| Dateisystem | file system |
| Untersystem | sub-system |
| Planetensystem | planetary system |
| Waffensystem | weapon systems |
| Zahlensystem | number system |
| Immunsystem | immune system |
| Soundsystem | sound system |
| Typsystem | type system |
| IT-System | IT system |
| Oktalsystem | octal numeral system |
| Ökosystem | ecosystem |
| Notenlinien | staff |
| Notenpult | music stand |
| Notenrolle | piano roll |
| Notenspiegel | transcript |