A marks transcript is a comprehensive documentation of your marks or grades that have been produced by your university. It may also provide a general score for your aptitude.
A medium of instruction certificate is an official recognition stating the medium in which one has studied. An MOI is used as a formality for an Education Evaluation for the host country.
After completing their graduation or degree in a certain subject, students are given a degree certificate.
A mark sheet is a collection of all of a student's grades from all semesters.