They're the same coin. The difference is how you get them. EOS is being distributed via https://eos.io/ by contributing ETH. However, the site blocks all US based investors as distribution is allowed to non-US based investors only. The amount of EOS you get from contribution depends on the number of investors who contributed ETH during the "period" (resets every 22 hrs). I tried VPN but did not work. On the other hand, you can buy EOS from exchanges such as Binance at market price.