You uhhh... you just don't get it.
Bard (Playstyle): Roaming strategic-mobility mage.
Taric (Playstyle): Immobile support tank/fighter. Requires a ally bond to bring out his full potential.
Bard (Passive): Restores over time. Ranged. Shrinks with chimes. Does slow/burst/AOE damage, which also increases over time.
Taric (Passive): Melee. Activates on spellcast. Doubles attack speed. Reduces cooldown. Scales off armor. Ultimately requires mana to use.
Bard (Q): Slows target. Stuns if it hits another target or a wall.
Taric (Q): Heals a crowd. Heals more with a chargeup. Burns through mana quickly.
Bard (W): Heals target and provides a small speed boost. Fermenting for 10 seconds heals more. Can drop up to three shrines around the map; useful for junglers or other lanes.
Taric (W): Bonds to a target, increasing armor and granting a shield.
Bard (E): Creates a tunnel through walls anyone can use. Can lead bloodthirsty enemies into traps, or move ahead of targets to cut them off.
Taric (E): AOE stun skillshot with a one second chargeup.
Bard (R): AOE ranged Zhonya's Hourglass that affects everything struck. Huge utility potential; save allies, stun enemies, freeze epic monsters and turrets, and allow Bard and allies to reposition in or escape from fights.
Taric (R): AOE invincibility with a two second chargeup. Targets still vulnerable to crowd control that no one has.