AspectEstablished facultyPassing state
DurationSettled abilityOccasional condition
ExampleExpressing new ideas fluentlyReciting one memorized fluent sentence
What is judgedGeneral expressive capacityPerformance on one occasion
This does not mean that a capable speaker can never make a mistake. A momentary lapse does not necessarily destroy an established capacity.
Equally, knowing a few correct expressions does not establish a general malaka; the faculty is seen in competent expression across diverse intended meanings.