| A | B |
| Dispatch | Speed in movement or performance. |
| Distinction | A recognition of the way things differ. |
| Endure | ”To put up with; to bear.” |
| Endurance | the quality of putting up with hardship. |
| Fluctuate | ”To rise and fall; to keep changing.” |
| Grueling | ”Tiring; exhausting.” |
| Compulsory | Required by law or a firm rule. |
| Robust | Strong and vigorous. |