Spell names must either be "Bolt1" "Bolt2" "Bolt3", etc...or "Thunder" "Thundaga" "Thundara", etc...
Moogles! For goodness sakes, people! MOOGLES!!!
The Summons/GFs/Eidolons/Whatever else
The Original classes (and thier offshoots)
Black Mage, White Mage, Red Mage, Fighter, Black Belt, and Thief
All of which become (in FF1):
Black Wizard, White Wizard, Red Wizard, Knight, Master, and Ninja
This theme is in all the games. Summoners are a big deal too, but weren't in the original. Another thing is Dragoons/Lancers
Really, to get knowledge of all the classes in the FF world, I suggest FFT or FF3j...
Let's not forget the recurring badguys...like CHAOS...