The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Methodology (2 members)
- ElectronMicroscopy (1 member)
- ProcessDescription (0 members)
- Milligray (0 members)
- Hydrofluorocarbon (0 members)
- FossilWasteFuel (2 members)
- TimeStep (3 members)
- Trader (3 members)
- Poise (0 members)
- SpatialRegion (8 members)
- ChemicalHeatStorageObject (0 members)
- Hauptachsendurchmesser (0 members)
- BigmapEln (0 members)
- NuclearEnergyCarrierDisposition (0 members)
- PrimaryData (0 members)
- Biogenic (0 members)
- OSW0de3277e2a3857f0978b876a201587df (1 member)
- Byte (0 members)
- Breite (2 members)
- Event (6 members)
- LiquidWater (2 members)
- Project (1 member)
- AgingProcess (0 members)
- ElnEntry (30 members)
- Production (3 members)
- GramPerMilliliter (0 members)
- FueledPowerUnit (7 members)
- Kilogram (0 members)
- Battery (6 members)
- OpenLoopPumpedHydroStoragePowerPlant (0 members)
- PassengerShip (0 members)
- ThermalInsulation (0 members)
- UnitOfMolarity (6 members)
- TwoDimensionalContinuantFiatBoundary (0 members)
- NitrogenTrifluoride (0 members)
- Gill (0 members)
- ProductCharacteristic (0 members)
- ChemicalReaction (5 members)
- Plutonium (0 members)
- CommodityRole (1 member)
- WikiFile (94 members)
- CommercialSector (0 members)
- Cable (0 members)
- Validation (3 members)
- University (0 members)
- EcoinventUnit (2 members)
- Ratio (4 members)
- PetroleumCoke (0 members)
- Millimolar (0 members)
- TargetDescription (1 member)