What is the difference between "User Acceptance Testing" and "Acceptance Testing"? - user acceptance test plan

I am currently recruiting for a post, and I want someone who has been with UAT SAP.

I know that a study of "acceptance" and "black box" testing "are the same - but my question is how various" acceptance testing "of the" ATU "... If you are not very different, as someone who" black box test had "and has, together with SAP to work?