Como dizer "diploma" em inglês

Português: Diploma
Inglês: Diploma or Certificate

Apesar de ser utilizado de forma intercambiável por muitas pessoas, achei interessante postar a diferença:

A diploma is a document issued at the completion of a course by an educational institution, which states that the recipient successfully completed the study. Diplomas also can confer an academic degree to the recipient. On the other hand, certificate is a broader term. It can refer to documents in different realms of the day to day life like a birth certificate, degree certificate, marriage certificate, and even a certificate of appreciation. So a certificate is an official document which affirms a fact. In educational domain, certificates can be given when a student passes an exam, wins a prize, or even completes a course. It just certifies that something being stated in the certificate is done. - Source: Difference Between Certificate and Diploma