W7-X is a stellarator [1], and ITER is a tokamak [2]. They are two different approaches to achieve controlled nuclear fusion. [1]: https://en.wikipedia.org/wik

W7-X is a stellarator [1], and ITER is a tokamak [2]. They are two different approaches to achieve controlled nuclear fusion. [1]: https://en.wikipedia.org/wiki/Stellarator https://en.wikipedia.org/wiki/Stellarator [2]: https://en.wikipedia.org/wiki/Tokamak https://en.wikipedia.org/wiki/Tokamak