When adding terms to a taxonomy, it is necessary to define each term as either general or specific.
The following table shows which terms must be the generic and which ones must be specific when taking means of transportation as an example:
| Generic term | Specific terms |
|---|---|
| Cars | City Cars Crossover SUVs |
| Boats | Unpowered Boats Sailboats |
| Aircraft | Balloons Jet Aircraft |