Case
Differences in word endings that demonstrate synactical relationships to other words
Mood
Actuality of the action - indicative, subjunctive, optative, imperative
Voice
Relationship between subject and verb - doing (active), receiving (passive), both (middle)
Tense
Time at which the action is being perfomed
Aspect
How the verbal action takes place over time - repeated, habitual, enclosed
What does the aorist aspect describe?
A completed action, not necessarily in past