| stretch(noun, action, work, worry, energy) |
| diligence(noun, activity, trouble, work, regard) |
| elbow grease(noun, expression, idiom, performance, action) |
| endeavor(noun, activity, performance, action, go) |
| pain(noun, work, bother, worry, use) |
| striving(noun, performance, action, go, work) |
| sweat(noun, performance, work, energy, strain) |
| tension(noun, worry, energy, strain, burden) |
| drudgery(noun, activity, performance, work, struggle) |
| energy(noun, activity, action, go, work) |
| pains(noun, activity, performance, action, trouble) |
| pressure(noun, drive, worry, energy, strain) |
| pull(noun, activity, work, worry, energy) |
| distress(noun, strain, effort, toil) |
| drive(noun, activity, go, power, strength) |
| grind(noun, performance, work, trial, effort) |
| intensity(noun, activity, go, drive, power) |
| stamina(noun, activity, go, drive, power) |
| usage(noun, act, help, benefit, use) |
| utilization(noun, action, act, work, use) |