I'll anssswer that if you'll tell me what a witch or a wizard isss.
A ninja isss, well thisss is the bessst exssplanation I can give, a perssson who hasss undergone vigorous training for more or less their entire livesss, learning to control their "chakra", literally their life energy. Learning to control their chakra enablesss them to accomplisssh incredible featsss. And of courssse, the majority of them being humansss, they have learned to turn thessse abillities into weapons.
I'm not completely sssure how it worksss, but by putting their chakra into sssomething, I believe they gain a limited control over it. Zetsu, for example, isss apparently very accomplished with plants. I'm also told that they can form 'contractsss' with animalsss that allow them to be sssummoned at a momentsss noticsse, although admittedly this is sssomewhat beyond my underssstanding.
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A ninja isss, well thisss is the bessst exssplanation I can give, a perssson who hasss undergone vigorous training for more or less their entire livesss, learning to control their "chakra", literally their life energy. Learning to control their chakra enablesss them to accomplisssh incredible featsss. And of courssse, the majority of them being humansss, they have learned to turn thessse abillities into weapons.
I'm not completely sssure how it worksss, but by putting their chakra into sssomething, I believe they gain a limited control over it. Zetsu, for example, isss apparently very accomplished with plants. I'm also told that they can form 'contractsss' with animalsss that allow them to be sssummoned at a momentsss noticsse, although admittedly this is sssomewhat beyond my underssstanding.