credentials vs certification

credentials and certification both are nouns.

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

As nouns, credentials and certification are synonyms defined as:

credentials and certification: a document attesting to the truth of certain stated facts

Other synonyms of credentials include certificate, credential.

credentials (noun)	certification (noun)
a document attesting to the truth of certain stated facts	the act of certifying or bestowing a franchise on
	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