Performance vs. Efficacy

Difference Between Performance and Efficacy
Performancenoun
The act of performing; carrying into execution or action; execution; achievement; accomplishment; representation by action.
the performance of an undertaking or a dutyEfficacynoun
Ability to produce a desired effect under ideal testing conditions.
Performancenoun
That which is performed or accomplished; a thing done or carried through; an achievement; a deed; an act; a feat; especially, an action of an elaborate or public character.
Efficacynoun
Degree of ability to produce a desired effect.
Performancenoun
(arts) A live show or concert.
Efficacynoun
capacity or power to produce a desired effect;
concern about the safety and efficacy of the vaccinePerformancenoun
The amount of useful work accomplished estimated in terms of time needed, resources used, etc.
Better performance means more work accomplished in shorter time and/or using fewer resources.Performancenoun
a dramatic or musical entertainment;
they listened to ten different performancesthe play ran for 100 performancesthe frequent performances of the symphony testify to its popularityPerformancenoun
the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it;
they criticised his performance as mayorexperience generally improves performancePerformancenoun
the act of presenting a play or a piece of music or other entertainment;
we congratulated him on his performance at the rehearsalan inspired performance of Mozart's C minor concertoPerformancenoun
process or manner of functioning or operating;
the power of its engine determine its operationthe plane's operation in high windsthey compared the cooking performance of each oventhe jet's performance conformed to high standardsPerformancenoun
any recognized accomplishment;
they admired his performance under stresswhen Roger Maris powered four home runs in one game his performance merits awe