For clarification of slang and terminology used.

For PC's an aura determines if a random event benefits the character. There are three types: Positive, Neutral, and Negative.

A positive reflects a character who strives for the happy go lucky events.
A neutral reflects a character who can deal with whatever outcome he can get.
A negative reflects a character who just wants to survive no matter the cost.

For NPC's an aura is a determining factor of their true personality. Sometimes it is easily revealed while other times it takes work to uncover.

For PC's a calling determines if a random event benefits the character. There are multiple Callings in the deck used for random events and the character should work with the GM to figure out which one is close to what the player wants to portray.

For PC's a Suite determines if a random event benefits the character. There are five types: Strength, Agility, Intellect, Willpower, and Doom.

Strength, a character solves things with brawn or might.
Agility, a character solves things with finesse or grace.
Intellect, a character solves things with smarts or cunning.
Willpower, a character solves things with wisdom or stubbornness.
Doom, only for NPC's. They are irredeemably against the PC's agenda.