is defense and dodge is the same thing ? i mean defense is allow u to withstand any attack and dodge is to avoid the attack is that the same thing ?
It depends... i for one consider a defensive technique to be the one that helps you block/dodge/cancel/withstand/parry/evade and so on the enemy's attack, basically anything that can help you stay alive xd But this is all a matter of opinion...
I agree that there are certain jutsu that are solely for defense, but most of them have mixed functions:
1.FTG, Gaara's sand, Susanoo can bost be used offensive and defensive.
2.Madara's phasing ability, and Neji's rotation jutsu are just for defense... or more for defense so to say.