Certificate vs Certification

What is the difference between a certificate of completion, and a national certification?

A certificate of completion is administered by a training facility after completing a training course. A national certification is administered by a third party agency to individuals who pass a competency exam. National certifications are required to be renewed every two years by continuing education. 

Certificate = Achieved by learning new knowledge or skills.

Certification = Earned by verifying your competency in skilled techniques.