| pressure(noun, difficulty, situation, constraint) |
| work(noun, verb, activity, occupation, profession) |
| business(noun, activity, occupation, profession) |
| characteristic(noun, character, personality, traits) |
| fortitude(noun, characteristic, character, trait) |
| indefatigability(noun, characteristic, character, trait) |
| job(noun, activity, occupation, profession) |
| resistance(noun, characteristic, character, trait) |
| strain(noun, difficulty, situation, constraint) |
| strength(noun, characteristic, character, trait) |
| stressful circumstances(expression, stress, circumstances, stressful) |
| stressful situation(expression, stress, circumstances, stressful) |
| tautness(noun, difficulty, situation, constraint) |
| tension(noun, difficulty, situation, constraint) |
| tensity(noun, difficulty, situation, constraint) |
| tightness(noun, difficulty, situation, constraint) |
| tirelessness(noun, characteristic, character, trait) |
| trait(noun, character, personality, traits) |