Does nature power permanently become a move?

Question

So some things say learnt by nature power. But does nature power permanently teach a move like sketch or is it like secret power?

Answer 1

No, Nature Power does not permanently become a different move. When a Pokémon uses it, it allows the user to use another move depending on the terrain (ex, Thunderbolt for Electric Terrain). If the terrain switches mid-battle, Nature Power will give you a different move before and after the terrain switch.

Answer 2

neither. Nature power makes its user immediately use another move, so it's more similar to mirror move or sleep talk.
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Secret power doesn't call or become other moves. It changes its own effect depending on the terrain.
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