1, The full form of GRE is Graduate Record Examinations. It’s used on Academic & Science ,Exams & Tests in Worldwide

Graduate Record Examinations (GRE) is a standardized test that is an admissions requirement for many graduate schools in the United States and in other English-speaking countries. Created and administered by Educational Testing Service (ETS). The exam aims is to measure verbal reasoning, quantitative reasoning, analytical writing and critical thinking skills that do not concentrate on one particular field. GRE is taken as a computer- based exam but in some backward areas of world it is also taken on paper.

2, The full form of GRE is Generic Routing Encapsulation. It’s used on Computing ,Protocols in Worldwide

Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco Systems that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol internetwork.