| A | B |
| assail | to attack; assault |
| bulwark | a defensive wall; rampart. Any protection or defense |
| citadel | a fortress in or near a city |
| fortitude | strength of mind that allows one to endure pain or trouble with courage |
| haven | place of rest or refuge |
| invincible | too strong to be defeated; unconquerable |
| mettle | spirit; daring; pluck |
| resilient | recovering strength or spirits quickly |
| stalwart | physically strong; sturdy; robust |
| stamina | endurance; resistance to fatigue, illness, or hardship |