authentication vs certification

authentication and certification both are nouns.

Word	Noun	Adjective	Verb	Adverb
authentication	Yes	No	No	No
certification	Yes	No	No	No

As nouns, authentication and certification are synonyms defined as:

authentication and certification: validating the authenticity of something or someone

authentication (noun)	certification (noun)
validating the authenticity of something or someone	the act of certifying or bestowing a franchise on
a mark on an article of trade to indicate its origin and authenticity	validating the authenticity of something or someone
	confirmation that some fact or statement is true through the use of documentary evidence
	a document attesting to the truth of certain stated facts