The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Occurrent (5 members)
- Truck (5 members)
- Becquerel (0 members)
- EffectiveDoseUnit (0 members)
- Dog (0 members)
- TimeUnit (13 members)
- VolumetricFlowRateUnit (1 member)
- CellsPerMilliliter (0 members)
- SorptionHeatStorageObject (0 members)
- Petajoule (0 members)
- Function (2 members)
- PrimaryEnergyConsumption (0 members)
- Exajoule (0 members)
- SimulationNode (0 members)
- NitrousOxide (0 members)
- AviationGasoline (0 members)
- MicronPixel (0 members)
- OSW886e3e6addac5401968b94baf847ac3f (1 member)
- GoodRole (1 member)
- Sample (1 member)
- Prüfmaschine (1 member)
- TestOntologyClassA11 (0 members)
- Siemens (0 members)
- OffshoreWindFarm (0 members)
- Wave (0 members)
- PowerOnlyGeneratingUnit (0 members)
- Microsievert (0 members)
- LiquefiedNaturalGas (0 members)
- Angstrom (0 members)
- Bruchdehnung (0 members)
- RenewableFuel (4 members)
- Stone (0 members)
- Ausscheidungsabstand (0 members)
- Picomolar (0 members)
- OSW8a3c9b84b0d25200a68acad817c9ff93 (1 member)
- DemandTrader (0 members)
- SolarThermalEnergy (0 members)
- ObjectiveVariable (0 members)
- InflationRate (0 members)
- SimulationModel (0 members)
- TestOntologyClassA1 (2 members)
- Nanoliter (0 members)
- Yotta (0 members)
- PixelDensity (0 members)
- ExtensometerGaugeLength (0 members)
- HydroStoragePowerPlant (2 members)
- Melting (0 members)
- VariableCost (3 members)
- WebService (1 member)
- AbgeschätzteDehngeschwindigkeitÜberDieParalleleLänge (0 members)