📒 an official document that may be used to prove that the facts it states are true
a birth/marriage/death certificate
certificate of something a certificate of motor insurance
The police are waiting for the doctor to issue a death certificate.
📒 an official document proving that you have completed a course of study or passed an exam; a qualification obtained after a course of study or an exam
a Postgraduate Certificate in Education (= a British qualification for teachers)
certificate of something A certificate of completion will be issued to all who complete the course.