Parameter

Your characters have a range of different stats.

ParameterEffect
Attack Determines the damage you deal from physical attacks.
Magic Attack Datermines the damage you deal from magic attacks.
Defense Reduces the damage you receive from physical attacks.
Magic Defense Reduces the damage you receive from magic attacks.
Guard

Decreases the damage received from enemies while guarding. 

Magic Guard Decreases the damage received from magic attacks while guarding.