The EB-1 is a the immigration petition that gets you the green card. Getting approved for the EB-1 is how you get that green card. The green card is a two-step process: first, you apply for an I-140; this is the EB-1. Second, if approved, you can apply for an "adjustment of status," which is the green card. That one is mostly a bureaucratic process, but you're pretty much guaranteed to get it.
