Disgaea has many spells that can be learned by the various classes. Not all of them can be passed on by the Master/Student Relationship, but most of them can. Skills are the abilities learned by using a weapon equipped by the character; to view them, go to Template:Weapons and chose, under 'Lists', the relevant game.
Spells can have up to 3x3 AoE and can have ranges of over 5. Offensive spells are split into 4 elements: Fire, Wind, Ice and Star. There are also Healing spells, spells that inflict status ailments and cure status ailments. Spells have different ranks of power, ranging from Normal (spell name), Mega, Giga, Omega, Tera and Peta (Dark Hero Days-only). Classes have resistances to elements, some have neutral resistances, 50% resistance in one element, -50% in another and 0% in the third element. Until Disgaea 5: Alliance of Vengeance, Star had no separate element resistance for it, but D5 does have a Star resist.