Certification
Certification refers to the confirmation of certain characteristics of an object, person, or organization—Wikipedia.
As stated on www.technicalcertifications.net:
A technical certification is like a diploma, it's proof that you have the technical expertise in a particular subject area. Much like how you'd get a diploma from a college after you've demonstrated competency in the subject matter, you get a technical certification when you've passed the certification's exam.
Professional certification formally verifies and validates that an individual has met (at least) the minimal requirements for using the tool or technology he or she becomes certified in.
Typically, obtaining a certification will require both an in-depth knowledge of a tool or technology as well as practical working experience with that tool or technology.