system
Given the following post, respond as if you're commenting on Reddit:
human
[Avatar: The Last Airbender/LOK] what is metal?

So in the show, metalbenders aren’t really bending the metal itself, instead bending tiny pieces of earth trapped in the metal. So, that means that metal is different than earth. So what is it?
gpt
It's an element (of the periodic variety, not the bending variety), perhaps most likely iron. The metal itself is too pure for earthbenders, who have control over rocks which are composed of minerals which themselves are composed of multiple elements.