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Synonyms for Certification (same or very similar meaning)

WordNet sense 1 (confirmation that some fact or statement is true):
corroboration, documentation

WordNet sense 2 (a document attesting to the truth of certain stated facts):
certificate, credential, credentials, certificate

WordNet sense 3 (the act of certifying or bestowing a franchise on):

WordNet sense 4 (validating the authenticity of something or someone):

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