| usefulness(noun, use, success, worth, efficiency) |
| utility(noun, worth, practicality, usefulness, helpfulness) |
| effectualness(noun, performance, energy, skill, affect) |
| proficiency(noun, power, ability, skill, means) |
| competency(noun, performance, power, energy, ability) |
| effectuality(noun, effect, affect) |
| practicality(noun, worth, usefulness, helpfulness, serviceableness) |
| qualification(noun, force, power, strength, ability) |
| sufficiency(noun, efficiency, productiveness) |
| vigor(noun, force, drive, power, strength) |
| activity(noun, go, drive, power, strength) |
| adequacy(noun, performance, force, power, strength) |
| applicability(practicality, usefulness, helpfulness, utility) |
| avail(practicality, usefulness, helpfulness, utility) |
| cogency(noun, power, strength, energy, influence) |
| facility(noun, power, ability, skill, means) |
| faculty(noun, performance, power, energy, ability) |
| fitness(noun, ability, skill, practicality, usefulness) |
| practicability(worth, practicality) |
| talent(noun, ability, skill, capacity, readiness) |