The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- ChemicalEntity (0 members)
- TypicalYear (0 members)
- Due (0 members)
- SubsetOntologyModule (7 members)
- Report (1 member)
- BridgeOntologyModule (1 member)
- ParticleArea (0 members)
- UnitPerLiter (0 members)
- SolarTrackedReceivingSurface (2 members)
- SocialCostOfEmission (1 member)
- MeineNeueKlasse (0 members)
- ElectricityImportValue (0 members)
- ModelDocumentation (0 members)
- Biological (0 members)
- PercentageYieldPointExtension (0 members)
- HowTo (1 member)
- Study (1 member)
- NauticalMile (0 members)
- BatteryElectricTruck (0 members)
- SyntheticFuel (3 members)
- OperationalSpaceRequirement (0 members)
- MeterPerSecond (0 members)
- Tool (3 members)
- HydroEnergy (2 members)
- ColonyFormingUnit (0 members)
- ZeroDimensionalSpatialRegion (0 members)
- ScenarioProjection (0 members)
- SoftwareFramework (0 members)
- ExtensometerDehnung (0 members)
- NonMethaneVolatileOrganicCompound (0 members)
- MaterialEntity (10 members)
- EconomicScenario (0 members)
- Reduction (0 members)
- HydrogenBond (0 members)
- Process (3 members)
- MaterialSustainability (0 members)
- EmissionFactor (0 members)
- LightUnit (8 members)
- TensileTestingMachine (0 members)
- ArtificialObject (14 members)
- Radiation (1 member)
- DehngrenzeBeiGesamterExtensometerDehnung (0 members)
- ParticulateMatter (2 members)
- Combustion (0 members)
- Microampere (0 members)
- PrimaryEnergyCarrierDisposition (0 members)
- Fathom (0 members)
- LiquidFossilFuel (4 members)
- MeasuringDevice (6 members)
- Quantitist (0 members)